I'd say while that's true, it's a reaction the 'liberals' essentially having won. Biden one, one of the most right-wing of Democrats, instead of Bernie. Most of the 'left' seems very deflated, based on articles and podcasts I've listened to. They've all but given up.

That said, I'm interested to know more about why you're sad about this. As in, the current liberal reality is so removed from anything leftists want or care about, and it seems so impossible to achieve any of the 'leftist' goals, that abandonment is more something to accept and be depressed about, rather than something that is actively pursued.

Personally I don't know how to feel about all this. In part, it's just different being a leftie in a European social democracy. But also I feel a lot can be achieved even in a climate that in general seems to stacked against leftist goals. It's understandable to be dejected that Bernie lost, or whatever, but something like, say, fighting for worker rights at Amazon can be a worthy battle to engage in.