Last Act of a Sad, Desperate Man

Now, at this point, there is no other reason. There is no other possibility than he is directly tipping his hat to QAnon and the people who follow it.

Why is he doing it? Is this just desperation?

I think it is desperation, and trying to keep faith with the people who have been in his corner the most fervently. He's losing support; people are walking away from this. They're just sick of it. And you also have to remember that he's doing this on Truth Social. This is not a widespread mainstream application; nobody's using it other than Trump people. So he's signaling to the people who are already in his corner — knowing that they love him, that they will do anything he asks them to do — because those are the only people he's got left, really.

https://www.salon.com/2022/09/27/why-went-full-qanon-hes-desperate--and-those-are-the-only-people-hes-got-left/