At the end of the day, if you look around the world in the last 20 years, America is the only major democracy that has kept the right wing in check where the liberals and leftists have managed to credibly push back and hold the right at bay. You look at England where Tony Blair poisoned the Labour party irreparably, leaving a negative legacy that has left the party in pieces. In France, the left-wing and liberals are polarized and now the French nation is divided between a neoliberal shill like Macron and a fascist like LePen. Italian politics had Berlusconi and okay they got rid of him and now you have neo-fascists and neoliberals again. In India, you have a right-wing theocratic government. Germany lucked out with a genuine tiny-c conservative like Merkel but even there, even in Germany, really right-wing parties like AfD have made gains over social democrat opposition.
American democracy right now, and the Democrat Party even under Biden is the only major force for liberal and left-wing politics globally at least in major democracies. I am not saying that because I am blind to Biden's flaws. I am saying that because it happens to be true. Barack Obama is the only successful left-wing major politician of the last 20 years. And Biden is his successor and inheritor.
The Obama era optimism was a lot like this. It's just that it was different because whatever his numerous flaws, W. was not a fascist. He was just a typical garden variety American imperialist and warmonger, and an incompetent...i.e. a kind of politician who can be harmful without being actively malicious. And for all his flaws, W. genuinely believed that he was doing the right thing and acting in America's best interests rather than a nihilist like Trump. In the case of Trump, this is like a collective victory for 4 years of unrelenting degradation.
I don't think Chomsky is saying anything that mainstream pundits haven't said. Van Jones said on Tuesday at CNN that the greater than expected Trump turnout and the lack of an immediate landslide was concerning and disappointing. And yeah it was. But again for months we have seen anti-mask and anti-lockdown protests in red states. I mean these people didn't follow mask guidelines and attacked science for 8 months, now suddenly on Election Day people expected a repudiation?
Look right now, as I said above, the Democrat Party is the only left-wing party in the world right now that has had success keeping the right at bay in a major first-world democracy*. Whether that says something about the state of international politics and so on, I leave that to you. If meaningful action has to be taken against climate change, it will be the Democrat Party who does that. I mean do you expect England's Labour Party, aka the real gang that couldn't shoot straight in global politics, to be the one who saves the day?
I absolutely want to see progressive politics work and so on, but at the end of the day no left-wing party is worth its salt so long as it doesn't do the first job of a left-wing party...protect people from right-wingers. The Democrats have kept their eyes on the prize.
* FYI major first world democracy means a democratic state with a population of roughly a quarter of USA. So don't bring up New Zealand or Taiwan with his wonderful social-democratic leaders.