Be careful to merely associate self-aggrandising with Trumpism - there is a lot more to it. I’d argue that in his first term, he largely checked his boundaries and tried to see what he could get away with. But he wants to be a dictator, an autocrat, and now that he has the majority of SCOTUS on his side, and more and more of the red states slipping into outright Republican autocracy, he has a lot more wind in his back. A second Trump term will be disastrous, and that’s not because of his self-aggrandising.