But haven't there been massive immigration in recent decades? And have the horrors of communism not hurt Russians and Russia and their core to the extreme and made them much, much less resistant and have much, much less "integrity" among other aspects? According to Wikipedia (which of course cannot be trusted), maybe 10% of Russians are Muslim: https://en.wikipedia.org/wiki/Russia#Religion . And while Muslims many decades ago were mostly Tartars as far as I know, there are other Muslim groups now as well. And Russia has as I recall been suffering from low birth numbers. And communists had extremely damaging effects in other regards, apart from the millions and millions and millions of ethnic Russians that they genocided.
According to the United Nations, Russia's legal immigrant population is the third biggest in the world, numbering 11.6 million.[98] In addition, there are an estimated 4 million illegal immigrants from the ex-Soviet states in Russia.[99]
Of course, that is not purely Muslims, but still a very large number of immigrants (though how they define "immigrants" (first-generation/other?) is important reg. those numbers).
And Russia before communism is not at all like Russia after communism, and here I am not thinking first and foremost reg. technology, development, science, industry, etc. etc. etc. And any process of "assimilation" (while I do recognize that there are some very different kinds of Islam in-depth, for instance extremely different kinds of Muslims in Syria, and the "Arab-based Muslims" in Indonesia vs. the more "native Muslims" there, one also very much has to be wary of crypto-Muslims and the like) that existed in Russia pre-communism may no longer be present in any meaningful regard post-communism for a large variety of reasons among other aspects and sets of systems. And if the birth-rates for ethnic non-Muslim Russians are low, possibly lower than reg. Muslim immigration and Muslim birth-rates, possibly considerably so, what is the tendency over time?
Assuming this table on Wikipedia can be trusted (one should be extremely careful with trusting Wikipedia in any direction of course): https://en.wikipedia.org/wiki/Demographics_of_Russia#Median_age_and_fertility , the fertility for ethnic non-Muslim Russians seem very small and frequently lower than that for Muslims.
And 10% Muslims (for 2010?) or more (for current year 2020?) seem... considerably. Though there was admittedly a considerable proportion of Muslims during the Soviet Union as well. And this source (as I quoted in the other comment (I apologize if this ends up splitting the comment threads, that may have been poorly thought out by me.......)): https://en.wikipedia.org/wiki/Islam_in_Russia#Demographics writes:
The Muslim community in Russia continues to grow, having reached 25 million, according to the grand mufti of Russia, Sheikh Rawil Gaynetdin.[4]
25 million Muslims and growing out of a Russian population of 147 million that might be shrinking.
And like for Russia in the past, China is currently communist, and genocided ethnic Chinese in the tens of millions fully intentionally, organized and planned. And this has harmed and damaged their core, culture, integrity, etc. etc. etc. That is extremely different from the past. And there have been policies such as reg. the 1-child policy (though I do not know enough about that policy) that likewise have had very large effects. I am not at all convinced that the current communists in China really are in favour of ethnic Chinese and not against them, and I do not know what their plans are in the long term (not what they claim, but genuinely).
But haven't there been massive immigration in recent decades? And have the horrors of communism not hurt Russians and Russia and their core to the extreme and made them much, much less resistant and have much, much less "integrity" among other aspects? According to Wikipedia (which of course cannot be trusted), maybe 10% of Russians are Muslim: https://en.wikipedia.org/wiki/Russia#Religion . And while Muslims many decades ago were mostly Tartars as far as I know, there are other Muslim groups now as well. And Russia has as I recall been suffering from low birth numbers. And communists had extremely damaging effects in other regards, apart from the millions and millions and millions of ethnic Russians that they genocided.
From this of the source you give: https://en.wikipedia.org/wiki/Demographics_of_Russia#Foreign-born_population :
Of course, that is not purely Muslims, but still a very large number of immigrants (though how they define "immigrants" (first-generation/other?) is important reg. those numbers).
And Russia before communism is not at all like Russia after communism, and here I am not thinking first and foremost reg. technology, development, science, industry, etc. etc. etc. And any process of "assimilation" (while I do recognize that there are some very different kinds of Islam in-depth, for instance extremely different kinds of Muslims in Syria, and the "Arab-based Muslims" in Indonesia vs. the more "native Muslims" there, one also very much has to be wary of crypto-Muslims and the like) that existed in Russia pre-communism may no longer be present in any meaningful regard post-communism for a large variety of reasons among other aspects and sets of systems. And if the birth-rates for ethnic non-Muslim Russians are low, possibly lower than reg. Muslim immigration and Muslim birth-rates, possibly considerably so, what is the tendency over time?
Assuming this table on Wikipedia can be trusted (one should be extremely careful with trusting Wikipedia in any direction of course): https://en.wikipedia.org/wiki/Demographics_of_Russia#Median_age_and_fertility , the fertility for ethnic non-Muslim Russians seem very small and frequently lower than that for Muslims.
And 10% Muslims (for 2010?) or more (for current year 2020?) seem... considerably. Though there was admittedly a considerable proportion of Muslims during the Soviet Union as well. And this source (as I quoted in the other comment (I apologize if this ends up splitting the comment threads, that may have been poorly thought out by me.......)): https://en.wikipedia.org/wiki/Islam_in_Russia#Demographics writes:
25 million Muslims and growing out of a Russian population of 147 million that might be shrinking.
And like for Russia in the past, China is currently communist, and genocided ethnic Chinese in the tens of millions fully intentionally, organized and planned. And this has harmed and damaged their core, culture, integrity, etc. etc. etc. That is extremely different from the past. And there have been policies such as reg. the 1-child policy (though I do not know enough about that policy) that likewise have had very large effects. I am not at all convinced that the current communists in China really are in favour of ethnic Chinese and not against them, and I do not know what their plans are in the long term (not what they claim, but genuinely).