On the contrary I think a Biden presidency would be far worse for any revolutionary momentum. 4 years of Trump has pushed Americans further to the left on all of the crucial issues. Putting a neoliberal Democrat in the White House, who will govern more or less like a Republican, all while bleeding state and national seats (as always happens with incumbency), is not worth it. All that does is prime whatever right-wing figure that succeeds Biden for more power.
Voting for Trump is unconscionable, so I won’t do that. But I also won’t be shamed into voting for a candidate and Party that shares none of my values.