I agree with this to a point. I would add that about half the country certainly doesn't agree with this attitude and view, and never will. And I also don't think, despite what this article says, that Democratic Presidents have acted this way, or given any indication that they will. Biden, Obama, and Bill Clinton certainly didn't behave the way that Trump (and to a lesser extent) Dubya has.
I do agree with the article that one very serious problem that will continue to exist even after Trump has left office is that no one outside the USA is going to trust us again for a long while, because everyone now knows that someone like Trump could always get elected again in four or eight years and start Trump's wildly reckless and destructive cycle all over again. If Trump hadn't been elected in 2024 then I don't think the damage to our foreign image and standing would have been nearly as lasting or as great. But when he got elected again in 2024 and followed his current course of deliberately isolating the USA from pretty much everyone else it is going to make it extremely difficult for future US Presidents to have much credibility in foreign policy, at least for a long while. Trump 2.0 has done more to damage our international standing and credibility than the old KGB or any hostile foreign power ever has.