As I think about it the hysterical Left have so far blamed Joe Biden, 'turncoat' (from their perspective) Blacks, Hispanic-Americans, women, and executed pet squirrels and their pet raccoon housemates for Kamala's loss.
They have not, however, blamed word-salad spewing and interviews-dodging Kamala herself. Nor have they blamed Nancy Pelosi or Barack Obama whom installed the idiot without letting their own Dem Party constituents cast a vote for her as a selectee.