Overall a mixed bag.
Surely some came out because of Trump's boorish pride in his bigoted appeals, but others, particularly in the rust belt, came out because Trump was the first major party nominee in a long time to challenge the broadly bipartisan consensus on free trade/globalization and to call the economy rigged from the top down. Of course, Trump ended up ingratiating himself to the swamp and perpetuating it, but doesn't discount the power of his rhetoric.
Very true. I would say overall the people Bronz is talking about (older voters who didn't vote by choice until Trump came along) are HP's, but a decent number are definitely FF's with whom I can sympathise.
On which note, as another poster (or multiple posters), have said, I can understand the rationale of some Trump 2016 voters, and can even sympathise with their vote. But the Trump 2020 voters are the ones who really rankle me (especially those that still support him after the results of 2020 and Trump's reprehensible post-election behaviour).