I also don't think it's the case with Trump - he wants to follow the biggest and the coin with the most prestige out there - and make it "US-made".
He wants the US to be ahead of the world, and Bitcoin seems like the way to do it, simply because it's the biggest and shiniest for him, in my opinion.
Yes of course, We saw how MARA pool just endorsed Trump in a very creative way on the blockchain, and they are Bitcoin miners. But it would largely depend on the people under him who are actually responsible for getting the stuff done. Fortunately that does not include Elon (he and Vivek were yeeted into a self-destructing DOGE capsule), but that still requires support from a lot of the people working for him.