America has a long history of violating Chinese airspace.
One cannot believe a word coming out of the Pentagon. And most especially one cannot believe that any American airplane has not violated Chinese airspace.
Not only that, if a Chinese surveillance airplane were operating 12 miles off an American coast, the screams of "provocation" would be heard 'round the world.
mcfly called it. If you go near a beehive, you will get buzzed. A bit closer, you will get attacked. If you go away, you will be left alone. That's the way it goes.