more than just a screen name

Your observation has parallels in our “real” names.
One’s name is the summation of a person. It represents who they are.
Think of the historical figures who’s name no one (in good judgment) would use for their child.
My screen name has more than one meaning.
So does my avatar and signature.
“a driver” : The type of car I prefer, as opposed to a museum piece.

And “A driver”. What I drive.