I also don't think we should be excusing her lack of being thorough in fact gathering and looking at different points of view.
I think this is sort of the crux of it. In my experience, people who are broadly liberal etc, support this idea of TWAW because they want to be kind. And they look at issues like Karen White as being aberrations - "we shouldn't punish all TW for the faults of a few."
But because they don't do the research and listen to what's happening, they are genuinely clueless about the reality of male violence. Often these people are, sadly, the same ones who really only feel for a female rape victim if she's attacked in broad daylight, while wearing coveralls - because whether they realise it or not, other rapes they'll blame on the women themselves. They don't want to believe that the men they know and love could be these "bad guys".
They don't see the micro aggressions.
And for young women (and I include EW here) they are either woefully ignorant of, or in complete denial about, the reality of how the world is still massively skewed towards men. All those young women who don't think feminism is needed anymore because "equal pay" or whatever. But for some reason they can't see that the lack of female leadership in business and politics might have something to do with feminism. The same young women who say things like, "of course America should have a female president but not Hillary Clinton" but are completely oblivious to how her sex played against her.
[obviously, it's not just young women, but we're talking about EW so....]