Show me the evidence.
You won't find any because there is none.
"No person shall willfully or maliciously interfere with or cause interference to any radio communications of any station licensed or authorized by or under this chapter or operated by the United States Government."
See the bit about "to any radio communications"? It does not say that *you* are protected as an operator of a device. It says your radio communications are protected. The venue removed people and their attendant devices, they did not interfere with radio communications.