Should Microcosm show the real identity of users?

pseudonyms are very important. People don't necessarily want their real name next to everything they say online, the recent spate of people changing their usernames to initials proves this.

I'm really pushing for the "why" here.

The recent spate of changing usernames to initials on here might only prove there is a trend on here for initials, and might have nothing to do with identity.

And if you don't belong to either of those?

Other services that require real identity treat this as not their problem.

I'm more concerned with the general question of real identity vs an alias, rather than specifics over the implementation or execution of either.