> Also, let's not forget that the Trump admin is a problem of 2.5 years at most.

If he invades Greenland, the US not only loses all NATO allies, but may be at actual war (rather than merely trade war) with them; the Asian allies are also getting worried because of how he's interacting with China. This administration is also somehow managing to piss off Israel despite having gone into a war as a co-belligerent with them against Iran, also pissing off all the other American allies in the middle east, and the Iran conflict is currently making people question the benefit of even having the US as an ally in the first place because the US can't keep them safe from Iranian counterstrikes, but even more broadly the US don't seem to be able to keep Iran from charging tolls on Hormuz so everyone else with a similarly strategic strait may be wondering if they can do the same.

The administration also has problems with re-emergence of diseases due to a combination of cutting funding and chaos (e.g. while screwworm may have come back anyway, the government response was suboptimal), and in some cases actively promoting disinformation (e.g. vaccinations). It takes a lot more work to eradicate some disease than to keep it away.

And this is without any of the current, justifiable, concerns that Trump may use ICE or similar to interfere with even this year's elections, let alone the end of his term.

Trump may not kill the US outright in just this term, the ships of state are slow to turn let alone sink, but he may do a Great Leap Forward.