Literally just read the list. It's not ahistorical because it gets history wrong, it's ahistorical because it has nothing to do with history. It has no ability to explain how and why fascism emerged when it did rather than sooner or later and thereby has very little understanding of what it actually is. It's like defining a disease by a very loose checklist of symptoms, the fundamental causality is completely absent, so there is very little you can even do with it besides make a shaky diagnosis.

Incidentally, Trump isn't a fascist. He flirts with being a fascist and in many ways has lit the way [something something tiki torches] for future fascists, but fundamentally, he's just doing fascist-like rhetoric as a way to sell people on relatively normal neoliberal policy. Probably the most strange thing he did was bomb Qasem Soleimani, something that Democrats didn't even really oppose on any grounds other than it being rash, despite Soleimani being a leader in the fight against ISIS. If I had to pick a second thing, it was probably lowering military funding to South Korea, which was just him being stupid and accidentally a clearly good thing to do. He's not harder on immigrants than Democrats, he's not harder on China or Russia, he's just a normal rightist wrt to queers, he likes giving tax cuts to rich people, and he's fussy in diplomatic meetings. He had very few policies that Biden didn't immediately perpetuate. If you want to call the whole neoliberal edifice fascist, fine, whatever, but he's not special in anything but aesthetics.