I think at the end of the day, he's just a grifter, like he's always been. The adults in the room (state and local officials, judges) will not allow a coup. Even his own AG Barr shut the idea down.
Not to say we should be anything but 110% vigilant rn, because the best way to ensure it isn't a coup is to act like it is.
Either way, he is sucking money from gullible individuals by eating at the very foundations of American democracy, and the majority of his party doesn't know or doesn't care, and that is just sad.