On the other hand, real names have the potential of 'outing' someones gender, ethnicity, etc allowing people to 'google stalk' you and/or be sexist/racist towar

On the other hand, real names have the potential of 'outing' someones gender, ethnicity, etc allowing people to 'google stalk' you and/or be sexist/racist towards you which would not have happened if they didn't know your info.