The thing you have to remember about a cult is that nobody seeks them out, and nobody knows they are in a cult until it is to late. These are people that got caught up in something they saw someplace online likely, and once they started down the rabbit hole it was to late to go back. And the like most all cults, Trump actively reinforces that everyone outside of the cult is a danger to those inside the cult, and that leaving is to dangerous to themselves, loved ones, America. And from the outside it’s easy to see they are being fed lies non-stop and nothing Trump says is true, but inside the cult bubble the lies and conspiracies are reinforced constantly, and the “threat” is always increasing.

… if they can’t learn from that, there’s not much else I can do.

Correct, it’s going to take a mass therapist program to help bring these people back to reality because they have been conditioned against looking outside the cult for almost 9 years now. Trump isn’t going to go away and they just deprogram overnight, this is going to be a long term issue for the US going forward.