As the stickied Joe M video says, it's crucial for Trump to play by the rules or else the whole thing will be delegitimized. I don't see how you can pull the rug and put Trump back in at this point without the media painting it as a coup.
So is it possible the military is keeping Biden in check.. But they intend to do it until 2024? Their only job is to make sure things don't cross a line that can't get undone, like getting into a nuclear war, packing the court, getting rid of the electoral college, etc. Biden's four years has a bad impact on employment, but the military has decided it's worth it to redpill people. Then Trump returns 2024.
I don't buy that for a second.