A movement may have died with him, most of the energy after anger/grief over death was spent would’ve died with him, but we’ll never know.
Now we are here so it has its own momentum regardless of whether or not he dies in his sleep.
I agree with this. Trump Delirium is a cult of personality (Trump literally speaks like Jim Jones according to my friend who has listened to the recordings of the people dying of cyanide poisoning in the background while Jones gives his last speech), and cults of personality rarely survive their leaders. Even in cases where the leader has named a successor, the magic dies with the leader and the cult often splinters into pieces led by various people from within the cult looking to grab power for themselves.
I think the Republican party would survive, as many pre-date Trump and the majority still support their hateful views, but I think if Trump died, it would be a major blow to the coherence of a unified party for some time.