Of course they resist. They can’t control him like the do everyone else in the GOPe.
Remember: The GOP is a club and you’re not in it.
Nothing different than what happened with Reagan. My then future FIL, a devout GOPer, corporate CEO and son of NYSE member hated Reagan so much he did not vote for him in 80. Admitted he did not vote for Goldwater either in 64.
Remember: The GOP is a private club and you're not in it.