when the little fact of religious background is mentioned at all.

Because they want you to think that cult just came out of nowhere and was totally not orchestrated to destroy Roman civilization after they started adopting Christ's teachings.

I think what they're trying to say is that only a crazy person would be a muslim. Damn islamaphobes! How dare they!

If you believe that a narcissist, pedophile, mass murderer, terrorist, misogynist, lecher, cult leader, madman, rapist, torturer, assassin and looter (Mohammed) is "the most perfect man who ever lived," you are suffering from delusions.