I personally wouldn’t vote for Kayne if I lived in the US (I agree with Trump in terms of policy but let’s leave it at that), but I think it’s actually very interesting to see him run. Black America could use a lot of healing and unity right now (they deserve better than having their grievances being exploited by destructive Marxists); he’s said some pretty dumb stuff in the past but he’s not particularly partisan. He’d siphon off a lot of black votes that would normally vote Democrat, a party I don’t think they owe any loyalty to.
Trump will likely win in a landslide but it’s hard to say what’ll happen after that. But he and Kayne do seem to be on relatively on good terms, so maybe Kayne could have input that Trump should consider. He’s more likely to listen to him than Biden would, at any rate.