She holds some blame, but at the end of the day there are nearly 18 million people that didn't vote for her, but did vote for biden. The only reasonable conclusion to draw is, well, she's black and even worse: a woman.
Ilhan Omar and Rashida Tlaib had no problems keeping their jobs. It's almost like they are different from the all the losers in their party in some way (hint: it's nothing to do with race or gender).