I'm even more cynical than you. We have to be "back to normal" (one way or another) by midterm elections next November, or the democrats will be wiped out.
They went too far towards "keep the elite status quo going but blame inaction on this one guy" and they're going to be punished for it, big time. Meanwhile Biden had plenty of power by himself to do so much more than he has done (his campaign promise of $10k student loan forgiveness, for one).
Most of them probably don't even care, because they can just sit back, blame the Republicans for not being able to do anything again, and raise money for the next two years. People like AOC and Bernie probably care, but they're not going to be able to turn the ship around.
Cynical is “the Democrat hoax virus will disappear two weeks after the election.” If only Trump were right about that, but alas COVID wouldn’t disappear so easily. The cynics were optimists in that regard.
What is true is that, whether people in the US look around their own country or look across the pond at Europe overall, it's increasingly difficult to lay everything on one political party and one politician in particular. Or indeed to argue that most policies/interventions (other than vaccinations that tend to prevent serious outcomes) make a huge difference at all.
But we probably mostly agree. A lot of differences in policies and behaviors (that many have and do feel very strongly about) are probably in the noise relative to other random factors.