I think pseudonym policy depend heavily on what we set as 'average'. My parents and their work relations use their real name everytime, for everything, I never saw them use a pseudonym and they scorn me for using silly or unscrutable names.
On the other end my siblings, cousins, school friends and some more all kept their AOL/hotmail/yahoo mail or other chat service nickname, which for a reason or another was a nickname.
I think it really depends on how, when and for what someone first came to the internet. If it was for fart jokes, or activism, real name policy is a bummer.