Doesn’t surprise me. Hillary was a singularly unlikeable candidate. Amazing the Dems could not see that.
Yet she was treated as inevitable for a decade and a half. Biden is no different. There is much less enthusiasm for Biden than there was for Hillary. Other than the percentage of motivated anti trumpers, enthusiasm is much much lower than 4 years ago. Biden has never moved the needle in five decades and is now a shell of who he was and few years back.