Agree with you jane.
It's the ubiquity and accessibility of porn that's the problem. It's become mainstream, a daily fix, not a guilty treat which is what those top shelf magazines used to be. Videos streamed into phones and, as you say, normalisation of things that were marginal.
Men get confused by porn, think the women involved are actually enjoying what they are doing, when many are not, and some are coerced. How many women would want their children seeing them in a porn film? It's not OK really, is it?
It's all very insidious and deceiving, because women don't realise they are colluding with its effects... they congratulate themselves on being 'at ease' with sex, what you call 'more extreme practices', even if they are not, really...they are just participating.
It's not actually about being liberated and uninhibited, it's about trying to please men whose tastes are moulded by porn.
Some people argue that this is about female empowerment. Women getting in touch with their sexuality. It's like arguments for breast enlargement or labial reduction... these things are presented as what women want.
Girls asking for implants in their teens 'to boost their confidence' - It's just what I want for myself
It's described as empowering to go out dressed in revealing clothes... women pushing the boundaries, unselfconscious. Never mind that if they get raped they will be disbelieved and shredded.
Women are encouraged more than ever to pander to what men want - turning themselves into caricatures, feeling they are no longer valid when they reach a certain age because older women aren't valued, their currency as sexual plaything devalued.
Other qualities - education, wit, dignity, life experience, kindness - are despised compared with looks, sexiness, being up for it. Look at AA Gill's comments about Mary Beard.
Feminism has been subverted into the 'right' to dress like a hooker, and to behave with sexual abandon.
Being a prude or 'crap in bed' is a worse insult than being cruel or stupid.
Even the most successful women trivialise themselves with cosmetic surgery.
Misogyny permeates everyday life so deeply we don't even recognise it is there.