The problem is that "moderates" are very conservative and fascist-leaning as well. The Biden administration is still funding genocide, still turning away asylum-seeking migrants, hell Biden hasn't even followed through on releasing prisoners convicted of marijuana convictions.
And people ARE protesting now, but not as much as under Trump, and these things haven't changed. Biden allows barely engaged liberals to think everything is okay, but Biden is still AWFUL he just has better optics to liberals.