Continuing the discussion from Is user ID + real name redundant?:
… well, not quite. It appears that if the user ID is the same as the full name (minus the capitalization and spaces), only the user name displays.
In other words, one would see only
michaeldowney next to my avatar image instead of "
michaeldowney Michael Downey". While this is indeed redundant, it makes one wonder why that person “doesn’t have a name”.
It’s also inconsistent with the user card and user profile page.