While I think you're right with women becoming more "disgusted" there's a further element to it for men as well.
Speaking as a guy who tries to be a halfway decent person, there is a huge pressure to make sure I don't come off like a fucking creep. I've lost count of all the horror stories that female friends/family members have told me and I really don't want to be like any of the cats in them. At the same time though, ALL of them have drastically definitions of what is and is not acceptable conduct. Which tells me, as a man, that there are NO safe bets.
No matter how many green lights I think I see, there's still a reasonable chance that someone is going to think I'm a fucking goblin, and (potentially) freak the fuck out on me.
As for society changing that's a thing to. I'm well into a good job with a "Morality Clause" in my contract that my employer takes VERY seriously. Something becoming more and more common. I've seen coworkers get caned over it and lose all severance bennies. I've had friends been on the wrong side of women trying to abuse it, and I had my ex-wife try to do the same. So, when you throw that into the mix, combined with the fact everything is recorded these days and finding people is no sweat, and what does that leave me?
A high-risk, low-reward situation with a very low chance of success.
And I'm supposed to risk my job/good name/retirement plans/custody of my kid/self-esteem for that?
It's easier and cheaper to just get a dog and a therapist for the emotional shit, then hit a brothel whenever I get tired of my hand.