In his defence, put yourself in his shoes. If he is a new poster: He shows up and from the start people are calling him Sheamus and negative repping him. He has no idea who this "Sheamus" person is and is confused as to why people are calling him that. He makes a thread asking about it in the Anything section, which gets moved to Rants, the most volatile part of WF. The same people that have been flaming him and accusing him are now asking him to post his face. I can understand why he is apprehensive. If he doesn't meet your beauty standards, jokes will be made about his looks. If he's just an average joe, you'll still be accusing him until Sheamus posts his face.
I say he doesn't post his face until Sheamus does, or until Sheamus posts a picture of his local newspaper.