John Bolton knows the game. Anything substantial that's Anti-Trump immediately makes you a LibDork Nation hero.
He'll use the John McCain method. McCain went from a war loving bomb everybody guy hated by the majority of LibDork Nation to instant LibDork Nation icon and beloved hero based on one vote.
Bolton knows that if mega corrupt war monger Joe Biden gets elected, that he'll likely find a new voice via proxies somewhere within the massive NSC infrastructure that war monger Joe Biden will rebuild. His old boss, mega war monger Barrack Obama had nearly 800 on his NSC staff (many of whom are holdovers who are really pissed off the U.S. is out of the regime change business, and want somebody like Obama back so they can begin regime changing and refugee'ing again).