If everyone refused to pay their taxes the government would just get the money from elsewhere, either by making cuts to infrastructure or worse, by just printing more money and driving up inflation. So cutting them off from tax money doesn’t do anything, they made up this game (money) and they can break the rules of it.
The mount method using root will still work since it writes over the app rather than installing it as an update, will still seem like it was installed from play, same way it still thinks it’s google signed in that state.