What you have to remember is that - thanks to radical messaging - the right is deeply convinced that the left is destroying the country. Once you believe that, you can rationalize anything to stop it because in your mind, you're saving the foundation - not destroying it. I give the founders more and more credit as each day passes. They recognized how dangerous demagogues were and made herculean efforts to demagogue-proof our system.
That said, I do not believe the Right is fully prepared for what happens if this effort gets to the point where this seems plausible. There's lots of anxious energy right now, but I think the scale of protesting that could erupt will make the BLM summer protests look like amateur hour. And if Trump sees a light at the end of the tunnel, he'll employ any tactic he can to see it through.