Given that you're familiar with MGTOW, I'll make the obvious point that the alternative to marriage is not necessarily sleeping around but can also be disengagement. Women may control sex, but men control commitment. And men, for all their flaws, can at least understand incentives. An organic withdrawal from marriage as a legal institution is already occurring based on marriage statistics and the social trends around "leftover women". And the only way to fix it is to fix the laws. Or double down on them which would be obvious accelerationism.

There's plenty of men who want to be married but have intensely negative second hand experience with the laws through fathers, brothers, friends, coworkers, news reporting, and online communities. Telling them it's their duty to jump into the meat grinder is not only dismissive of the legal realities but dismissive of their worth as individuals. It's just not persuasive.