He's not out to govern and evolve, he wants to tear down and rebuild, the problem, as you can see with twitter, he just has nothing new or better to offer, he just wants everything to be HIS DOING and NO one else's. I am really getting the vibe that something broke him recently and he's just on some kind of spree since they forced him to take over twatter.
It feels like he's just so detached from reality. I unironically think he needs to touch grass. Disconnect from the internet for a few months, stop sleeping in the office, maybe take a massive family vacation with all his weirdly named kids or something. Just...experience life.
Right now, it feels like he's treating America like it's a giant game of Sims, and he's hitting that point where he was getting bored with the day to day gameplay so he's decided to go balls to the wall on the save file and start doing extreme stuff to make the world interesting. At the end of the day, given his wealth status, he's largely disconnected from anything that happens. Just like in a Sims game, if you meddle around too much and mess up the world, you aren't personally affected. You just quit and start a new file.
I don't think he's going to destroy the government or anything quite so drastic, and at the end of the day, I don't even think he's going to really change much. Like others have said, he has a pattern of doing stuff like this. Tearing it down, then ultimately reverting (mostly) back to the older system when the new one fails. Just a slightly worse version of it. I think that's more or less what's going to happen here. He's going to make a big deal about defunding things he doesn't understand, there's going to be an initial panic for a week or two, then the halted funds will resume, but everyone will be paranoid and worried, some people won't come back and they'll be replaced with newer, less qualified people who ultimately can still do the job, but in a slower and less efficient manner.
*Edit* Oh, and maybe some of the stuff that goes back to normal will also get a dumb/cringe name rebrand so he can act like he made something new and revolutionary when it's literally the same thing we've always had for years