Quite the strawman. Does anybody claim that?
Women would certainly agree that social circles everywhere tend to be genderized. And part of the reason is a vicious cycle: men are not used to spending time with women, so they easily misunderstand the situation and get sexual or romantic ideas that are not reciprocated. And having to sort out this unwanted attention and the resulting emotions makes women even less likely to want to spend time with men.
There’s a reason why “the gay best friend” is a trope in American fiction featuring women. It’s not because gays are feminine — it’s because they don’t bombard women with their unprocessed feelings.
If you want to fix the situation, stop rambling about incels and start thinking of ways to get boys and girls to spend more time together at all ages. American parents still seem to tend to treat boys and girls as separate species.