This is not only about Republicans... as a matter of fact, it isn't about Republicans at all. Neither is it about Democrats, for that matter.
It's about the ever-widening pool of good, strong, Constitutional Conservatives from which the delegates to the convention will be drawn. Not only will they be conversant in Originalist thought, they will be devoted to it.
Please don't make the same mistake that adherents to the John Birch Society continue to make... the Founding Fathers were not fools, and neither are we.
You misread what I wrote. I characterized his argument. I agree with you.