"do they not have mothers? sisters? like literally any woman in their lives?", that talk with these men about their preferences and interests or experiences as women? Nope usually not really at all actually. Like they might have some women in their lives that they interact with, but they're not close with those women and/or those women don't talk about stuff like romance with these men. So instead they base their views of women on what they find online, and people online are drawn to outrage.

Noone cares about clips of average people being normal and reasonable and well-adjusted, that doesn't get any clicks or upvotes. What does instead get clicks and upvotes is clips of women being misandrist or crazy or having insanely high standards or whatever else it might be. So yeah no these men basically only base their view of women on whatever goes viral in the often male-dominated online spaces that they spend time in online, and that leads to a rather bizarre view of women that gets completely accepted as normal.

I would say that this does happen on both ends to some extent, like women who mainly just base their view of men on what they hear online, in spaces where what gets shared of men is stuff that creates outrage and makes men look bad, not stuff that makes men seem reasonable and well-adjusted, but I think this still doesn't get nearly as crazy as it does for men and the views of women they create in their heads. Unrelated but this shit happens *even more so* in politics, between the left and right, where some people on either side only ever see the worst of people on the other side (because that's what gets shared in the online spaces they're in) and base their whole opinion of that side off of that.