They are the FEDERAL COMMUNICATIONS COMMISSION. They have determined that a communication medium meets the definition of something that falls under an already existing law. They didn't write any law. Again, you guys have no idea what's going on other than what some talking head on the radio has told you.
Which is what happens when "leadership" delegates authority to underlings that have no legitimate authority to complete a task. There are many examples of Congress doing this, including the EPA, HHS, etc.
"We'll just make a law that says other people can make law, that way we can't be blamed for it.".
Only problem...it doesn't work, and somehow, someday, the ones delegating authority that is their sole responsibilty will be held responsible. Maybe not as individuals, but a whole. It is a rule of nature.
