If you are still going to a UK folk club, despite all the signs to the contrary, the chances are that you have been going for a fair old time.
I would expect a singer to have some sensitivity towards the rest of the members, in the sense of not flogging any one song to death in front of long suffering and patient friends.
Any song, especially a good one, can become irritating if heard frequently enough. For that reason "Songs you shouln't sing in a UK folk club" could apply to any one of them!