I guess he could be trying to provoke mass unrest so he can declare a national emergency and start shooting people.
He’s running the Hitlerian playbook. Why do you think he’s engaging in mass persecution of various minority groups? Behind hatred, his real goal is power. If you put the screws on people hard enough, eventually people start setting off bombs and executing reprisal shootings. If you ruin enough people’s lives, some are bound to respond violently. Then you can use that violence to declare an emergency. And as we saw after 9/11, nothing increases a presidential power like acts of terrorism.
You will end up paying the share of taxes to your state government that you currently do to the federal government. If the federal government collapses, all 50 states are now de facto independent. Those states can now start forming a new country or new collection of countries as they will.