No Trumpbot can deny they are fascist unless they can convincingly make the case that they would have dumped Trump had he found some way to stay in power in spite of losing the election.
What's your definition of fascist?
I am willing to bet almost anything that if you were to explain it, it would be different to the actual real definition.
Fascism can be a slippery thing but it generally involves many of the following: Extreme nationalism, compulsory devotion to an authoritarian leader, single party rule, only one acceptable religion, scapegoating media/academia, an enemy within that needs to be locked up/wiped out, widespread domestic spying, militarized borders, militarized police, anti-Labor, anti-leftist, anti-communist, anti-truth.
Things that exclusively apply to Trump (and his supporters) :
Extreme nationalism - fair enough, I'll give you that.
I honestly think that's about it.
The borders stuff, remember Obama started the wall.
A lot of the other stuff you've listed could easily be applied to Democrats and Biden supporters too (compulsory devotion to an authoritarian leader, single party rule, scapegoating media, an enemy within that needs to be locked up hence the multiple attempts to try and impeach Trump without success, anti-labor, anti-truth)
It's not a question of anti-leftist, either. There's examples of left-wing fascists too.