With individual red vs. blue state comparisons this is true. But I'm thinking that if California residents must pay more federal income taxes because of the elimination of some SALT deductions, then whole groups of states WERE subsidizing California and others. Those federal income tax dollars were made up somewhere before California residents had to pay them.
CA has paid more in Fed taxes than it received in total Fed expenditures since WWII.
Every year.
How can you equate that with subsidy by other states, when the very opposite is true?