Empty threat. The FCC doesn’t even have enough people to enforce the rules in the Amateur Radio Band, much less track down and prosecute all those who ALREADY violate the rules of it.
Don’t be fooled. The FCC rarely tracks anybody down. They have a LARGE volunteer organization comprised of extremely grouchy, old, mostly retired, very SMART men ... all amateur licensees... with time on their hands, and all the required gear to hunt you down and positively ID you. They’ll quite gladly do all the “leg work” for the FCC, and by the time the FCC shows up at your door to a Deputy Sheriff, there’s not a whole lot to discuss.