Those supporting Trump's delusions now are the same people who were screaming about Joe Biden's dementia at the time he withdrew on July 21. Polls were showing Trump with a growing lead over Biden, and Democrats had been calling for him to step down because of his debate performance.
Now the polls are showing Kamala Harris with a slight, but growing, lead over Trump. Trump is spouting pure nonsense about crowd sizes, and it looks like the AI nonsense is something he sincerely believes. In his mind, that would explain what happened rather than accept that a black woman could be generating that much enthusiasm. He is also doubling down on his false memory of a near helicopter crash with Harris's old boyfriend, Willie Brown, even after it has been proven that it never happened. Trump claims he has proof to back up his delusion.
Where are the calls for Trump to step down? Democrats were able to convince Biden to withdraw voluntarily, after they showed him proof that he was losing the race. We now have the same kind of dilemma concerning the candidate on the Republican side--a candidate whose performance is obviously on a track to lose and drag downballot Republicans along with him.
There is no attempt by Republicans to remove a candidate suffering from obvious delusions. Unlike with Biden, Republicans know that they can't talk Trump down from his perch. It isn't just Trump being delusional. It is the people around him and his devoted followers. They can't admit any reality other than the one spun for them by a delusional old man.