Yes I can see where you're coming from, I really can.
For me though it goes back to how difficult it is for stuff that is related to women is to change, compared to other rights movements.
It's just so normalised. And yes I know this is about a word but for me it links back across other things.
E.g. hate crime legislation. Whether people think this is good law or not. The fact is that women and girls are not protected, sex is not included.
So if you beat up a black person or a gay person and use racist or homophobic slurs while doing it, that crime (abh or similar) has an element of hate crime attached which I think (?) can mean harsher punishment.
If you beat up a woman while calling her a bitch and a white and a cunt, then the abh only applies. Women are not recognised in law as a group who get verbal or physical abuse because of who they are.
The words that relate to us or our anatomy are not verboten. Even though we are globally and historically an oppressed group.
The words that are used against us are used in fairly mainstream nasty porn as well. Which seems to lean heavily to (het porn obv) sexually dominating the woman. Many mn posters report being called all sorts during sex when they gave no indication they would like that.
I know I'm veering around a bit, it's late 
Questions for me are things like
Why are male genitals in general (in this area) seen as milder than female? Dick, cock, nob are quite mild. Cunt, less so.
Why are insults to men often comparing them to women, saying they can't get sex with a woman, or actually insulting a woman close to them? (Eg pussy, wanker, bastard).
And all the phrases that are around being penetrated? Misogynistic/ homophobic?
Fucked, buggered, screwed. 'bending over' for xyz.
I think in general men do and have led the language on the swearing front and it's all very interesting.
The fact that calling someone a cunt is in many areas the worst thing. (With the only person saying it wasn't saying twat was worse, same difference!). Is worth talking about.
Women's biology and functions have been unmentionable, dirty etc for ages and ages. Mainstream religions around menstruation. Victorian treatment of prostitutes (and not the men who had sex with them) in Victorian times. I know and remember loads of women who wouldn't refer directly. 'downstairs' etc. And the current thing that there is no nice friendly word like Willy for girls. Why not? Because they all become obscene very fast. Cunt, pussy, fanny, snatch... ? There's none that are in common use around the UK and are as inoffensive as Willy. There's a reason for that.
My phone also keeps capitalising Willy and I don't know why
patriarchal phone wanting to give it respect maybe 🤣🤣🤣