not? Who gets to make that call? When Criddle gets on and posts will his posts get deleted because he is claiming to be Ben Criddle? Where would it end?
When opposing fans come on the board (i.e. Gonzaga) and start chatting would there posts get deleted for "claiming" they are a Zag fan. Who is to say they are telling the truth?

Let people say what they want because believe it or not sometimes they are telling the truth. No one is forcing anyone to listen or believe them.