Currently, the game automatically creates a new profile the first time the game is started and uses Windows' username for this. However, for lots of people this is not the name by which they wish to be known online. (often it's their real name or something generic like "Admin", "Dell-PC", "Dad",...)

This forces users to create a new profile, without being able to copy their settings, controls or campaign progress. All other profiles can be renamed, just not the default one.