Typical narcissist, won't participate in anything they can't control.

he lost already

He is such a putz, a huge ugly boil on the ass of America.

If the debate commission doesn't cave (and I doubt they will), tRump will.

He needs a change in the race a lot more than Biden does and tRump is running out of screen time chances to do it. A rally might be personally satisfying for him (maybe) but it won't have enough impact to change the election. He'll be locked in to lose or win (less likely) on the MAGA base and the electoral college rural slant.

It might be entertaining to see how far off the rails the steroids have pushed him.