ill give you the long answer because its late at night and i can't sleep.
its not because anything particular we say or do. its because we go against the 1000 year old lie of "just be yourself" and "every pot has its cover". our parents generation have a vested interest in keeping this lie alive, so people will obviously attack anyone who's against it.
this is the short answer. now ill get into the meat of things, and you might want to save my comment for later use.
young woman are a huge issue here. society at large, protect female interest. especially young females- as a society we have to keep deluding ourselves that drinking and fucking through your mid 20's is a rite of passage thing, when its clearly degenerate and decadent behavior.
parents defend their daughters actions,behaviors,and beliefs. so in turn, woman become 'spoiled' - sort of like how iron oxidizes or how food rots. think about this, we allow our OWN daughters to watch 50 shades of grey and sex in the city,we allow them to walk around half naked. we allow them to whore their bodies in the sake of capitalism (porn). so it only makes sense that we defend their interests in the face of criticism.
incels are in large, a moral issue. not just a group of people. we are taking all the flak because we are interfering with progressivism.
sure, you might say. "men can be corrupted too, and they created the porn industry to their own benefit". sure, that can be used as an argument. but the difference is that woman have self-agency and moral obligation when it comes to sex. if woman didn't want to fuck, there wouldn't be a single prostitute or a 'sex-slave',ever. woman are willingly killing their own babies (abortion) and we praise them for infant murder, which is a crime against humanity.
also, all of those e-thots,prostitutes,camgirls,poledancers etc. could have been someones wife. but again, we treat camgirls as 'freelancers' and 'content creators' rather than people that escape the responsibilities of adulthood. (and we shame men that play video games, right?)
the second part is 'male productivity'. we need to keep males productive so we lie to them about stuff. we lie to them about a bunch of stuff like "only talent and skill matters" and "personality is key" and all kinds of bullshit(self-help industry is mostly aimed at men). if we keep spinning the mill of lies long enough, we might get men to sacrifice themselves for 'the greater good'.
TLDR: we fail to raise our daughters so we shame our sons instead. its a double standard that exist in every modern family. and society might collapse in the face of this hypocrisy