Destroying government and rule of law and replacing it with a violent movement, giving people implicit permission to be brown shirts ("he who saves the country cannot violate the law") isn't just "populist right" in the same way "cancer" isn't an "inconvenience" -- yeah sure technically you could say that, but you probably wouldn't.

But Trumpism is literally a right-wing populist movement. It's directly influenced by the alt-right/Tea Party and right-libertarianism, accelerationist white supremacy and the Christian right.

It would be incorrect to call it a "progressive" right movement, because it stands in direct opposition to what progressivism is commonly understood to be. Doing so would be the same kind of category error as calling the Nazis socialists because the word "socialist" is in their name, ignoring the fact that they hated socialists. The Nazis weren't socialist, and Trumpists aren't progressive.

Oh, I didn't disagree that they're populist right, and not progressive. I just think it's so much worse than that. Or maybe I don't associate enough "weight" with "right-wing populist"?

For me it's the difference between someone who has a different opinion on the same facts, as wrong as I may find that opinion (and they mine) -- and a movement that just destroys and creates facts ad-hoc, believes what it wants, and smears and attacks anyone not aligned. It's the difference between someone who disagrees with or even fights me -- and someone who attacks me while they're basically wrestling with the voices in their head, without seeing or hearing me, at all.