The bulk of the article discusses, like I said, the creation of of an "elite" professional culture that left enough people feeling isolated and left behind to rally behind someone like Trump, who positioned himself as standing in opposition to that culture.
That's a plausible explanation for Trump's "origin story". How he became so popular. And one thing he has done quite skilfully is discredit the mainstream media - in the eyes of his cult-like supporters at least. He's managed to convince them that they're being lied to by the mainstream and he is the source of truth. Which is quite smart, because it means all the times the mainstream media expose his lies...well, in his followers' eyes they're the liars, that just proves what Trump is saying. (Although weirdly they were fine with MSM sources like Fox News sucking Trump's cock endlessly, I guess that mainstream source is OK because it agrees with and defends Trump. Or used to).
And this also means that every indictment, well that's just the mainstream trying to "get" him. That's just further proof that he's right.
I saw a funny/depressing video where a Trump supporter was asked about the indictment - not the recent one, the previous one about the classified documents. The supporter said it was probably a pile of garbage. He was then asked if he'd read it and said no. Same question about the recording of Trump admitting he shouldn't be showing classified documents to people. Same answers. Probably a pile of garbage, hadn't listened to it. Sigh.
And there's a fair bit of cognitive dissonance going on here. People are so invested in Trump that all the evidence showing that maybe he's not the messiah and is in fact a very naughty boy just makes the core support more entrenched in their views.
But surely he wouldn't actually win another election...would he? I mean, the one he did win was because of a big "anyone but Hillary" vote. His core support, while big, isn't enough to win an election. The Democrats would have to put up someone truly awful to lose to Trump again. If they let Biden stand again they could be toast though.