😂 Well, it's certainly true that people get concepts wrong - all over the place, not just on Mumsnet!
I'm less sure about @BauhausOfEliott's main points, though. I don't read every thread; I can't say she's never been unjustly called a 'pick me' for liking football. I have seen it, more than once, when a woman boasts about preferring male company, male-coded pursuits, and finding women bitchy or shallow, etc. That's plain old misogyny - 'internalised' because she herself is female.
The BDSM debate is too big to deal with in half a post. I feel it's inherently misogynistic, having come to this conclusion after years of consideration. It's also entwined with a lot of deep psychological factors that probably couldn't be untangled outside a therapy room.
Casual sex is an interesting one. I think it's often contentious because of differing styles of sexuality. I've enjoyed a lot of social sex in my time, entirely without thought of developing relationships. While I tried to choose wisely, I didn't care whether these brief acquaintances respected me afterwards. Many women and men need emotional involvement to have good sex: there's no right or wrong to this, only what's right for the individuals.
Putting out in hopes of being loved is obviously harmful, and it does tend to be women getting hurt. They have most likely been manipulated by patriarchal ideas. Few of them, imo, are suffering internalised misogyny but are plain victims of patriarchy.
I think a lot of PPs have missed the point that, if a woman's rude to you about your perceived failure to meet patriarchal standards for women, then she is the one with internalised misogyny. If you then conclude that all women are mean bitches, you've joined her in internalising misogyny.