I would love to share in your optimism, if MAGA formed a third party, and split from the moderates, it could be possible
However, I have interacted, and witnessed over the years, first hand, Trump supporters rendered needy, for the MAGA fix.
It could of been the 24/7 Right Wing conspiracies, social stress, economic status, developmental injury, or any combination that drew them in.
What they appear to share in common, is a strong internal yearning, like small children, for a strongman parental father figure, telling them what to do, how to think, who is your enemy. who is your friend, and who and what to fear.
Trump delivered that phycological high in a way his supporters could comprehend, and MAGA learned how to exploit the process.
MAGA simply picked up Trumps gauntlet, and is running with it