The NFL’s game book says basically the same thing.
But when you bring it up to liberals (I have) they point out that it is just guidelines and you are not breaking any laws.
However, that misses the point. It’s not illegal for a married man to have an affair. That doesn’t make it a-ok.
The United States Code is a consolidation and codification by subject matter of the general and permanent laws.
U.S. laws trump any rule book.