Much of what Trump officially destroyed should never have been built in the first place. Most of the damage he has wrought is not from his actual platform, but from his sheer stupidity. Covid and Russia both come to mind immediately, but also the irreparable harm he has done to the ~century-old carefully crafted global illusion of American legitimacy. As far as we can tell, he doesn’t read, including without limitation the daily intelligence briefing. There is no way to act strategically if you don’t avail yourself of all of the relevant information or you purge the administration of the messengers of news you don’t like.
As we know, stupidity is far more harmful to society than malice, as malice is at least zero-sum: someone gains when you lose.
Stupid people through their actions simply harm everyone, themselves included.
Think of what an improvement it would be (over Trump) to have someone hyperintelligent as POTUS, but with the exact same platform. It would be bad, but not the catastrophe that Trump has wrought by being a moron who can’t think more than 15 minutes in advance and fundamentally doesn’t seem to understand the concept of strategy.
It of course includes the social services you speak of too, but those are barely a drop in the bucket compared to the public-private wealth transfer that is the military-industrial complex.
The president simply isn’t permitted to dismantle it; there are too many stakeholders way more powerful than the holder of that single office that will not permit it.