The hope would be to get to a place down the line where people don’t really care about whether they have the right or not.
I know that brings about thoughts like “the government is going to trick you into getting rid of your guns then they’re going to fuck you over!” But I don’t think protecting yourself from the government is really feasible at this point, arsenal or not.
The best hope would be that the military would be unwilling to kill a large amount of Americans and would turn on the hypothetical dictator.