I'm not cheered by the idea of the Republican party completely collapsing.
Improving, certainly. But any government needs a decent opposition (one that's working for the benefit of the country, not just the party). And political vacuums are dangerous in general and right now particularly so, because we can see the powers that are arising and will rush to fill that vacuum.
The US has been incredibly lucky so far that the Dems chose to behave like grown-ups and act in the national interest by putting up a team which is prioritising restoring democratic norms.
It would have been entirely possible for them to follow the Repugs into the populist demagogue space and run a lefty authoritarian cult leader against the right's authoritarian cult leader.
That could yet happen in 4 years' time.
I wasn't able to read the New Yorker article above, but people referring to "zombie Trumpism" haven't understood what's going on. Trump was just the explosive to blow a hole in the side of the building. He didn't create the far right billionaires, he didn't get himself to the presidency; he's just the carnival barker and showman. Now that he's blown things up he's expendable (although excellent value as a dead cat). The people with plans can slide into the chaos he has created.