I little ahead yeah sure, but "Bernie would have won" and the establishment have almost entirely lost control of the narrative. Its difficult to imagine them doing anything besides getting more aggressive to the left if all they have is "Hasan did 9-11" which didnt even work in New York City.
Trump is unpopular across the board unless you're full chud, he has no achievements besides decimating the empire in some really visible ways. AES and DSAers actually have substance to their message, and give people something to believe in. I am impressed by AES and mamdani's rhetorical skills every time I see them talk on YouTube, and it shows in their approval results.
People on both sides are tired of the Israel shit and the datacenter shit. The Iran war is very unpopular unless you're MAGA.
Hate to be too optimism-pilled, but to stop the left (over the next few years), the fascists will need to seize power in a very ugly and unpopular way (could work, but it wont last forever), or the establishment will have to try and purge and crush it (will probably work for exactly one election cycle).
We do know from history that we shouldn't necessarily expect revolution to happen in the imperial core, but at the periphery. Happy to be wrong about this of course, but it was always a long shot. In my opinion, our goal is always to harness revolutionary and/or other left/working class energy in a way that weekend the core institutions. This both the right thing to do, and gives our comrades at the periphery a bit of breathing room to do some very cool shit^TM.
If the US is under a demand to fund social programs, if there isn't any faith in things like random decades long military campaigns, and if people can see how things are going in the PRC relatively easily, they dont really have any outs besides fascism. But that's here now, and people dont actually like it when they can/have to see it.
If parts of the country snap to fascism even harder, then the genocial United States empire will be facing a balkanization crisis (see username), further weakening it. I dont want to see a full civil war in the 2030s (the fascists win 99/100 of the simulations, cause the liberals arent gonna do shit if that pops off), but it isnt totally unrealistic (like 75% unrealistic) to imagine a devolution of the US to and EU-type entity in like 2050 if there are states radicalized against free Healthcare or something.
Anyway, it sounds like you're open to my train of thought here, just wanted to elaborate a little more.