If you want to question the state, I'm all for it. My loyalty to the state is commensurate to its loyalty to the Constitution, but the state is not the same thing as the country,
The anthem is, I believe, about celebrating what unites us, as a nation, without regard to race, creed, gender or country of origin. If it is now something that divides us, so be it. But let's not kids ourselves that ending this unifying tradition would be snapping yet another of the centripetal forces that holds these united states together.
Maybe the time has come to jettison the Union of these states. I'm not convinced that the jettisoning will improve the cause of human freedom, however. I suspect that those taking a knee during the anthem today might look back, years hence, and realize the folly of their action. (Not that taking a knee during the national anthem leads inevitably to dissolution of the Union and the subsequent chaos, but it is, I believe, unmistakably a step in that direction).
I could be wrong, however.