I don't refer to wrestlers by their real name unless it's their name on the show, but this is really just one of the the last taboos as far as the codes wrestlers go by that separate the 'boys in the locker room' from 'the marks out there in the seats.'
It used to be that using terms like mark, smark, job, jobber, pop, face, heel, tweener, put over, etc. was seen in the same light. Some on the internet (who I consider behind the times) are the same way even now, going on videos and acting like people like myself who freely use these terms are doing so because we're trying to sound hip or something. In reality, using these terms come natural for me at this point, and what argument is there against using them when wrestlers write books and do interviews in real life (and on WWE released DVDs) where they freely use these terms for everyone to hear?
In a similar way, I can see referring to wrestlers by their real names as ceasing to be a big deal in the future. It's just another part of the business as a whole evolving. Interesting bringing up referring to actors and actresses by their real names even when talking about their characters on-screen because I usually do just that. I switch back and forth between them for some reason (that too comes natural, it's not something I consciously do.) For example, I'll call Walt and Jesse by their character names when talking about Breaking Bad but I'll refer to Bruce Willis by name when talking about Die Hard.