I think the issue with this hypothesis is that it omits variables.
Basically... is the United States, scratch that, WILL the United States be on a trajectory, post-Trump, where there is reason to believe future leadership will consistently be trustworthy to foreign nations? And how would anyone know that, or at least have reasonable confidence in that belief?
What brought us here to elect someone like this, and is that "what" going away or being fixed? Is there some hope for undoing polarized politics in this country, so that "this election is the most important of our generation" doesn't occur every four years, and both sides believe that "the other side" will ruin the country once and for all?
Time is not enough to fix the core issues. Time can move us past this particular era, these particular instances of unpredictable leadership, but time alone will not move this country past whatever levers of control convinced this electorate that this kind of leadership was the right choice for this country -- and the rest of the planet.