Unfortunately I think all the hate for Musk is having the effect of getting Scrotus' back up and making him defensive about his being butt-buddies with Musk. He's that way, show him more and more how wrong he is and he'll only shout louder that he's right.
I don't know what it'll take, if there is anything, that will make Scrotus admit that he was wrong in attaching himself to Musk. It'd have to be something intensely personal though, like Musk banging Melania.