To my knowledge, 100% is traditionally unlocking or collecting anything that has a lasting effect on the game as a whole, whether it be pointless or not. I see no mention of going for all exits that affect the over-world map paths, which means the game map is incomplete and this is not truly 100% as per the traditional definition that has given 100% a reason to exist as a category name in the first place.

Perhaps rename the current 100% to Beat All Levels or something similar that summarizes the rules?