Like I said above, it's because Trump didn't want anything to do with him and told him so to his face, and because he's a glowing-in-the-dark federal asset operating a dragnet. I assume he's been cut loose because he's been all over the place lately, but it doesn't change that for the past four years his primary mission was to act as demoralizing agent to divide the Right into increasingly schizophrenic purity spirals.
That's not what they hold over him, or at least that's not what I think. He got swept up in the "event" at January 6th and told people with a fucking bullhorn to crash down the barricades and storm the Capitol Building. He's on video doing this. They had him dead-to-rights and were threatening him with the same inquisitorial trial if he didn't flip and become an asset.
Don't you think it's really crazy that his social media reach on all platforms started expanding exponentially in the months AFTER January 6th? Post-J6 he's bigger than he ever was before it.