In a sense I believe there is great cause for optimism, because there are quite a few ways society could change for the better and Americans seem to be rallying behind those solutions.
Yep, agree. People are rallying behind things they are worried about, and it's how this stuff is supposed to work. Not sure about universal healthcare. It's not the only solution and what worked in Europe or elsewhere might not suit the US. Keeping in mind that there is thing leviathan of Obamacare already in place, it would be hard to root it out completely, but at the same time not sure how viable are incremental changes there.
The same goes for minimal wages. I am not a fan of price floors in general, there are IMO better ways to stimulate wages. But if the consensus is there – great. Again, it's hard to project something that works in Europe to the US. Structural relationships between the labor force and capital are completely different.
Maybe the source of pessimism is partly rooted in streaks of disappointments in the top political class. From the outsider's perspective, the last competent administration was probably Clinton's. The current bunch seems doing fine overall too, except for Afghanistan, but it was always bound to be a disaster.
I really wished Biden's administration dropped salami tactics with military help to us. But we are grateful anyway, especially considering alternatives.
EDIT:
apologise for the long reads on the football forum, lol. It's been a while I had some time to talk about something "normal")