I don't see why people refer to wrestlers by their real names. A wrestler name is their character's name, not the actual person. Anything they do on screen is a result of their character. Glen Jacobs doesn't set people on fire, Kane does. Mark Calloway doesn't bury people, Undertaker does. I don't know the reason why people call wrestler's by their real names, but I prefer calling them by their wrestler names while talking about them in WWE because they're characters.