That (iirc) Harvard professor specialized in fascism wrote that we cannot count on institutions for protection. We’ve seen that institutions, including the judiciary, can be taken over and corrupted. Trump has stated multiple times that one of his first acts as president will be to basically clear the decks of the federal government and fire all of the non-Trumpist personnel. His lawyer even argued that the president can break any law, up to and including murder, and impeachment is the only process to hold them accountable. I’m not even sure how that’s supposed to work, since then they could arrest or kill everyone in Congress who would support their impeachment.
Basically, we’re fucked.
The issue is that that’s who Biden and leading members of the democrats are. They do not, in my opinion, have the framework to deal with a political campaign being an existential threat.