OK, so this doesn't answer what principles you're referring to...this is just you having a tantrum.
Calm down.
What those on the Left were opposed to wasn't simply "old white men" it was "old white male pluto-technocrats", which is why The Left went for Bernie in the primaries.
When it came time for the general, yes we went for Biden because the alternative was perverted Conservatism, and we aren't so immature that we remove ourselves from the political process just because our guy didn't win.
You, on the other hand, HAVE removed yourself from the political process over "principles".
So what has doing that gotten you?
What do you have to show for it?
Are you more or less angry now than you were before you decided to abandon democracy?
Because we have to show an economy that is doing so well, the Fed is trying to provoke a recession because workers have too much leverage.
Biden opposes engineering a recession BTW, do you?