The public comment process is not an opinion poll, it's a mechanism to make sure the FCC has all the relevant information at its disposal. They are under no obligation to favor any viewpoint just because it's popular.
You've actually got it backwards. If this were a case of an Executive Branch run amok, the proper move at this point would be for Congress to pass a law and fix it. And Congress itself is definitely an opinion poll, we call them 'elections'.
Elections have consequences, and administrators have a large amount of leeway in how their departments get run.