As your conclusion so aptly stated, no on is going got change their opinion.

The demographic trends for MAGA are not good. But it will take a decade to let natural attrition reduce their numbers. In the meantime, they have enough to effect a coup--and only need the word of their leader.

The question we should be asking is why are people like Mr. Trump viable contenders in the first place?

This speaks to brokenness of the system.