"If the government can take away fundamental rights via executive fiat then we never had rights in the first place, we had permissions"

I mean, isn't that the definition of rights? If the government can take away fundamental rights via executive power, then it is called having a penal system. We all live in a state of exception, freedom is always conditioned, during a pandemic or otherwise. There is no principled libertarian stance that is violated now but not status quo ante.