This seems to echo the point I previously tried to make about Trump's "delusions"
I don't think Trump believes he'll be reinstated in August. I don't think Trump really believes anything, not in the way that most people hold beliefs at least. He has a purely instrumentalized view of the world: "Beliefs" aren't sincerely held, but just another tool to manipulate others. He never asks himself "is this true?" so much as "what will it get me to say this?" And when it comes to this particular conspiracy theory, the answer may sadly be "quite a lot."
https://www.salon.com/2021/06/04/theres-nothing-delusional-about-donald-trumps-conspiracy-theories-they-are-working/