This is just an opinion, but I wonder how many 'non-techies' that would have bothered?
As someone switched on to those kind of arguments I can definitely understand - but to the every day lay man, I wonder how much a real name policy really would have mattered...
(seeing the other side, I can imagine how people uneducated in these things are also naturally suspicious - my grandma is probably more cautious with her data than any other person I know - perhaps knowing the specifics of threats rather than just fearing privacy leakage as a generic fear inducing concept is worse?!)