User blog comment:Gsimenas/Call Gsi Button/@comment-32599351-20180627154627/@comment-6697950-20180627185629

The navigation template is separate from the articles themselves, thus it got edited by two different people. We defined the category specifically based on if the character was actually born in the virtual world or not (i.e. artificial Fluctlight or not) for clarity. Kirito technically wasn't born in UW - he was probably thrown into the world as a young child without any memories and treated as a lost child of Vector by the other residents. At least, that is how the manga interprets this. No real point in actually making him go through the baby stage, since that won't really yield all that much data for the people in charge.

On the other hand, the person who did the navigation template probably just listed Kirito there because there was a subcategory specifically for people in Rulid Village and Kirito spent several years there, so it sort of made sense to put him there. However, he technically shouldn't be there, as he isn't an actual resident.