It is not because they disagree.
Neoliberal Joe’s team came in too hot, too hard, too fast. The progressive base was thrilled by his flurry of executive orders on woke, trans, climate and open borders. It had the effect though of shifting the spotlight away from the Capitol Siege narrative and Blumpf’s impeachment. The aggressive volley on polarizing culture war issues rallied the Right while repulsing moderates. It came at a sensitive transition period when Blumpf wasn’t the center of national attention for once.
The fact that he isn’t on Twitter as the center of the universe anymore might be music to the ears of woke progressives, but he also isn’t there to annoy millions of people and drive the national conversation. Big Tech censorship has also accelerated the evolution of populism by filtering out the most toxic voices who would otherwise be on there saying extreme things that alienate moderates.