Knowledgeable and competent people like General Milley. Who Trump wants executed for treason.
Trump like all the authoritarian and dictatorial losers can't handle knowledgable competent people. They surround themselves with sycophants, which they burn through and destroy one after the other. Everyone who came close to Trump over the last few years at least is now in the pits, reputations and careers ruined. Despised by all decent folks. And finally rejected by Trump when they didn't kiss his ring. Sorry for the English English pun.
He has himself, I have seen and heard him, issued the most dire threats to the US system of government and American society the country has ever seen. He's been very up front about it.
Be careful what you wish for - you might just get it. And the sad MAGA acolytes are the ones who will suffer most under his 'policies'. Simply because they are the weakest and they're groveling at the feet of bullies.