It’s not clear if Californians will pay more tax. It could be less. CPAs need to calculate, don’t blindly believe in propaganda.
Even if Californians do get a tax cut, Californian’s aggregate federal tax could be a higher percentage of the total federal tax revenue. But this is different than a higher tax for Californians.
Exclusion of state income tax may make 46 states happy and 4 states sad. Politically its impact is negligible since all the high state income states are ultra deep blue. It could make the red states happier but happy people may vote less