categorize Biden as you will
but if he loses the election he will leave without trouble, not that I think he's running a 2nd time
can't be said for the previous guy
the previous guy being president is a result of the ideology of the current guy in office.
democrats enable the trumps of this country. through their dogshit actions and complete inactions, are emboldening this to continue.
when the supposed "party of the working class" hardly supports the working class, it creates a situation where the working class distrusts and leaves the democratic party in favor of the rhetoric and demagoguery and right wing populism (aka fascism aka not real populism) that you see from Trump type righties. in other words, when the average joe can't explain what's going on, the whole "communist takeover, CCP Joe" angle is very appealing.
this is basically the story of how fascist and populist authoritarian movements rise up no matter what country we're talking about here.
TLDR - right wing populism is a direct response to the failures of neoliberal anti union pro free trade austerity politics.