From what I can tell they’re most mad about the idea that water isn’t an infinite resource during a drought, and the suggestion that it should maybe be allocated using a market.

That and some of them are unhappy about living in the same state with people who have different skin color or sexual orientation and having their government pay for schools that teach science, women’s reproductive health, social safety net programs, and so on.

The less populated parts of the state get dramatically disproportionate state and federal resources spent on them. Support for their schools, infrastructure, medical care, fire protection, etc.