You open with "IMO" but want evidence from me? Lol.
There were many dems who remembered Trump as the funny orange man, didn't really care to turn out against him, and fell for the "both sides bad" messaging that was absolutely rampant on the left (esp with regard to Kamala and Palestine). So no, I don't think the most important rally-the-base rhetoric was to ratchet up "Trump is Fascist" so much as suppress "Both Sides Bad" while we had an election to win.
"IMO" means "in my opinion." You made a statement as a fact, which is why I asked for evidence. Lol.
Agreed the "both sides bad" messaging was a huge factor here. But that's exactly why we should talk about these fuckups as questions of competence. They are unambiguous evidence of a difference in both sides' ability to actually operate a government!
Both sides were bad. Biden and Kamala were terrible candidates for the Democrats to run, and their campaign positioning lacked a unifying aspirational message.
Which was a horrendously stupid tag line. All people saw was "prices not going back." Everyone in America remembers simpler, better times. 1990s race relations alone were far better than they are now.