I agree, a lot of them are. But not all of them. Some of them are quite thoughtful and rational people.
I would presume so but electing a president who wants to quickly and drastically cut the federal budget would:
A) Fail because they don't control the budget
or
B) Cause the total collapse of the US economy if it where to be suddenly enacted.
Honestly his followers are often just downright creepy in their devotion.