Actually yes. The NFL tries hard to disassociate themselves from gambling, especially during the Superbowl, as much as possible. This includes not allowing tourism ads for Los Vegas during games, and according to some rumors not allowing NBC to advertise their show Los Vegas during games.
Interesting that the NFL tries to downplay gambling, though I doubt this has much effect on the local bookies' action.
Actually I can see why the League would try to stop groups including churches from charging money to see the game. This does cross a line. Some of the other rules strike me as dicey, though. Can the NFL really dictate what size screen people watch on? And if sports bars get a pass, how can others be stopped from charging for snacks?