Can't agree. It is quite clear from the context that we are mandated to submit to dictatorships as much as democracies, at least to the extent that their laws do not contradict God's, which of course is the point. "Romans" was written first of all to those living under the authority of Rome's iron fist.
We are the highest ranking authority in our land (and we elect and appoint public servants by o-u-r constitutions).
True, and we have several means to rise up to protest unjust laws. Unless they violate God's law, though, we are bound to obey them.
(And contrary to Totalibertarian revisionism, the People have constitutionally authorized ways of prohibiting people at large from possessing very harmful substances, as we choose.)