I firmly disagree with that. Toxic feminine discourse is just as prevalent for young women it's just that because of the shrinking categories of masculinity (basically down to be rich or be buff or both because it is about an air of protection), there is a wider range of 'acceptable' feminine behavior. And that is besides the point that if you are a woman and you choose to default towards perceived masculine behavior that is socially acceptable outside of the the most conservative circles. And as you say, because of this freedom most women are either radlibs or libs.
That said, there are two forms of generally feminine toxicity that I see from online that are translated into bar culture. The first is generally libertarian feminism, or 'girl boss' mentality, who are incredibly destructive to anyone around them for the sake of personal gain, but generally fight their own battles. The second is the opposite which is a 'helpless' mentality where they either act like they can't do anything or shouldn't have to do anything, or literally go out of their way to antagonize others so that way they have to be constantly 'saved'. And these behaviors span both avowedly liberal and conservative women because the vast majority in the U.S. do not have an actually ideologically consistent political worldview, so attempting to assign them one is a fool's errand. They are all libs insofar as they are picking and choosing from the buffet of ideology.