I hope you're right, but I don't think so. The party leaders all knew he was an idiot, so I thought when he lost in 2020 they would abandon him immediately - but instead they all supported his attempt to thwart the election results. Then I thought they would abandon him after 1/6, but whatever he does they just keep doubling down on him.
I am pretty sure if he wins, and he's still alive for 2028, he will insist he can run again and they will support him. When he dies people will still cast votes for him in the primaries, and will glorify his name: try to make his birthday a national holiday, rename Dulles Airport to Trump Airport, etc.
I have given up expecting the GOP to come to its collective senses.