I think it's been obvious for a while that American voters are becoming less polarised by race and more by education/class. That's not really been explored very much. Steve Bannon has been pushing for it for a long time, but if you can't take Bannon, there are sane lefties like Ruy Teixeira who are making similar points.
The polls this year are consistently showing Trump around 20% of the black vote, which is unheard of for a Republican in the post-civil rights era. I don't think black voters over 50 are moving - it's specifically young black men, who hate the Democrats, don't much like the GOP, and seem to like Trump's disruptive potential.
There's a meme going around TikTok of young black men talking about Trump, saying the guy lives in a golden tower, he shags porn stars, he's in and out of court all day, he's got a mug shot, he's now actually taken a bullet - let's face it, he's a gangsta rapper.
That's the kind of thing that's interesting and worth trying to understand. Unfortunately most Democrats are not only crazy on a range of issues, they've also got that centre left thing that we see with UK Labour - our voters are out of touch, but we can shame them back into line.
If anything I think the Louis Theroux approach of finding some extremist outliers and holding them up to be laughed at is even less productive.