I dunno man...I think there's a good chance MAGA dies with trump. Don't forget that MAGA is really nothing but the Tea Party with a more "charismatic" leader.
I'm not saying that it isn't weakening the GOP. Absolutely creating some major fault lines etc. But parties have gone through ups and downs, coalitions shift, old leaders fall away and new ones emerge.
MAGA is what the Tea Partiers (the grassroots) actually wanted and thus much more virulent than the Tea Party itself.
When the Koch Brothers funded the Tea Party, they were focusing on economic/fiscal issues. But the grassroots (the base) have never really been fiscal conservatives, especially when they witnessed the actual results of the neo-liberal era on their lives.
What Donald Trump did, at least as a candidate, was eschew the fiscally conservative focus that the billionaire class was trying to impose on the grassroots, and to focus on the culture war issues (immigration, racial grievance, etc.) that the grassroots actually cared about.
The Tea Party (especially the fiscal/economic side) is who the GOP elites wanted the base to be. MAGA is who they actually were, and thus will never die in entirety.
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