Good observation. Something has shifted, and (for now) the array of behaviors from casual groping to rape no longer serves the Revolution.
Some writers have said that Hillary Clinton's defeat has empowered the younger radicals, who grew up in the "everyone help yourself" milieu and deeply resent it. The Old Guard lost to Trump - off with their heads! Cultural revolutionaries.
Interesting times, interesting times.
You make the most sense. It's certainly not a resurgence of morality, nor do the leftists really care about women.
There's a political move going on. It's taking too big a toll among the highly visible elite to just to be a smokescreen for other events, or a breather from Tsunami Trump. Somebody or somebodies are making a play for power.