Firstly Trump isn't a racist. Secondly, who cares if he is. Let's judge his Presidency on results not smears.
I've written numerous posts explaining just why everyone should care, read them if you want, but it boils down to the observation that what's happening in America under Trump is an almost exact copy of what happened in the decade before Hitler took power in Nazi Germany.
You're right that there are plenty of other criticisms to be made against Trump's destructive policies that are of a more immediate concern. Like his dismissal of science regarding climate change or COVID-19, his terrible handling of the pandemic, his continuation of benefiting the rich to name a few at the expense of the poor, to name just a few. On your perspective on "far left" supporters and movements: politics, politicians and political parties, not just in America but all over the so called civilized world, have shifted to the right during the past half century; not even the right wing politicians and professors will even try to contradict that. The whole Overton window of political discourse has of course followed suit. So, what you see as "far left" is simply "left". No extremists here.
Actually Trump has been 100% right on COVID-19. He said it was no worse than a bad flu and that lockdowns were a bad idea.
I thought he was wrong at the time but he has been proved 100% right.
He even respected The Constitution by berating State Governors for bad policy but not legally interfering in State matters.
It is true that in the period 1923-1933 Germany was a democracy that printed too much money but I don't see that the comparisons between Trump and Weimar Germany go further than that (and both conditions have been true in the US for at least 40 years before Trump became President). A pretty obvious and important difference is that America is not paying reparations for losing a previous war.
If he was right, he didn't believe he was right... Today's post will clarify this. And it doesn't really matter if he's right; the way he handled it was a disaster regardless, and full of lies regardless. So, no, in the end he wasn't "right", not by a long shot.