Again - sex is not just about love and affection. But the fact you keep going on about that is obvious as to your agenda
No, 40 years ago women might not have been so open about their kinks online. Not because they didn't have them but because the shame was even greater and they felt they couldn't.
Saying they "believe" they like it is also ridiculous. It's taking away autonomy and making out these women can't make up their own mind
The Story of O and The Claiming of Sleeping Beauty are both much older than 40 years and were deeply kinky erotic novels written by women, for women.
There is a growing concern, and practioners of kink will readily acknowledge it, of people using the label "kink" as a front for actual and disgusting sexual abuse. But these aren't people with a kink, they are abusers. Different.
Which is why, instead of shaming and shutting down discussions of kink, calling people with kinks all kinds of names and making accusations about them, we need to be able to talk more freely. So we can educated on safe practices, on what is and isn't a kink, on continual consent
By making these things shameful it's MORE harmful.