We know why Trump picked Vance as his running mate; clearly overconfident, he thought he didn’t need to appeal to undecided voters, so he wanted someone who would keep the base happy by consistently owning the libs. On that count, at least, Vance has been a success. But Vance isn’t just a troll; he’s an intelligent ideologue who wants to convert America to the Godly Society against its wishes. Why would he sell out by telling lies about Haitians eating pets?
Trump sees MAGA voters purely as a means to give himself arbitrary power over America. MAGA goes along with this because it believes Trump will burn the current (and in its eyes, corrupt) version of America down. Vance sees the destruction of American liberal democracy by Trump and MAGA as the first step in the creation of the Godly Society. In the short run, therefore, Vance and MAGA are allies.
Once the system has been destroyed by Trump and MAGA, what will come next in actual practice? I think MTG’s New Confederacy, a selectively libertarian nation in which red states are given the freedom to be as beastly and repressive to powerless groups as possible, is a better bet than Vance’s Godly Society or Musk’s techno-aristocracy. But it is early days, so we really don’t know.