You used to be able to change your name in earlier versions, until it was decided that the protagonist would have a fixed name. That was left as a little easter egg, and you can get some extra dialogue depending on the name you put.
Pretty much. It's a nice little bit of humor given the naming your character trope has been around for a long time when games these days benefit more from having less blank-slate type characters that you could freely name and imprint onto.
But beyond that I do have plans for it. There are a couple easter eggs in there depending on whose name you put in now and I'll be adding more as time goes by.