I think the rabid left fancies themselves as being in a 1935-like situation. Some of these nutjobs really DO think Trump wants to usher in a fascist murdefest where only the "purest" people survive. Which, of course, is ridiculous.
These goons would like for Trump to be no more; failing that, flagrant fraud and breaking of the law to effectively go back and time and rid the world of "Hitler" was "justified."
Frankly, I think it is the rank and file Dems who generally think the election was legit, and the rabid left were the ones who know it was littered with fraud (they are also probably the fraudsters) but don't care. They'll never say so in public, but in their parties that's what they'll say - "we saved the world from Hitler 2...and history will smile kindly on us."
There is also likely a big chunk of leftists (and NeverTrumpers...) who just despise liberty and used the "Hitler 2" dopes as human shields to perpetrate the fraud.
I am sorry such a good (ex)friend is in this camp, and was so toxic as to wreck the friendship.