I'm not Trump apologist, but the facts speak for themselves. He didn't actually refuse to step down in 2021. The January 6th protests we not a coup attempt or an insurrection. We've been through all of this before. Clinton, W, Obama, and Trump version 1 were all predicted to declare themselves President-For-Life by their critics, too. It's just become a mainstream conspiracy theory at this point. Maybe Trump actually will try something, but the Chicken Little fearmongering is wearisome.
Trump is an authoritarian, but "fascist" and other specific labels have specific definitions. Trump doesn't really fit them.