For christ sake
Praise you Jesus!
Of course, swearing could be banned, racist chanting was after all. Didn't Woking or someone do some sort of clean up the game campaign?
Interestingly enough, there was a time (some time before the 1960's I think) when there was not a lot of swearing at football matches. Are we any better for it? I doubt it.
Having said that, the main thing to worry about is threatening and abusive behaviour, such stuff is none the better for being said without swear words.
It's not big and it's not clever, but on many occasions, stewards probably have bigger things to worry about. Unfortunate maybe, but probably true.