It's defunct now but you've clearly never been on bodybuilding.com miscellaneous/relationships forum.
If you think this is sexist; you'd have needed sectioned after reading on there.
The internet is also chock full of "red pill", incel , MRA, mgtow, manosphere etc. forums.
With men talking about how women should be rounded up and put in a form of concentration camps for fucking, reproduction, slavery or death.
About how women should never have been given the vote, about how women are all spoilt children who can't be let to be responsible for decision making about anything, about how women should not do jury service, about how women getting "power" has destroyed western societies.
A famous red pill/Mra figure called Roosh V opined very forcefully that rape should be legal/not illegal in any private premises. So if a woman entered a private space with a man, she should know she was implicitly agreeing to sex, and she should never ever be alone with a man if she didn't.
Andrew Tate has a gigantic following - a young man who liked to boast about injuring women in physical alterations, about pimping out women, who's been arrested for sex trafficking and sex offences. One of his exes says he strangled her til blood vessels burst in her eyes..... As I said, he has a huge following.
Our politicians joke about drugging and sexually assaulting their partners.
I can't even look at a video of funny things happening at the horse guards gates on YouTube, without seeing comments by men below (referring to the female guards) like "We used to have men on horses on guard; now we have lesbians on ponies".
The rapists and sex offenders in our society get laughably light sentences.
I could go on indefinitely.
The back lash among men against women's rights and the changes in the last 50 odd years have been violent, extreme and pervasive.
So really, if you haven't been anywhere as sexist as here ..... You couldn't have been many places online. You lead a very sheltered online life.