It' s not a TACO, it's kayfabe. California alone is 14% of US GDP, and a donor state to the tune of a hundred billion dollars per annum. It's the last state the federal government wants to get into a budgetary pissing contest with.This is either not going to happen, or it'll be another quickly-ended TACO, or it'll watered-down into triviality.
Trump can FA with red states as much as he likes because he has dickless sycophants in the governor's offices and legislatures, not to mention the slavery government hordes of crypto fascist idiots who'll vote for him, but when he starts that with A-list blue states he'll FO real fast. Trump's an egotistical fool, but his keyholders and pay piggies aren't.
Newsom and his pack are spineless neoliberal shills, but they have keen senses of political self-preservation and they know it's their asses on the line if they don't push back.