There is another easter egg with him that you will more than likely see if you are going for 100%, during one the hints you find in the open world he mentions he might say something else if you find all of them, if you get all of them he will just say "something else" anytime you interact with a hint marker
QQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQQ?????????????????? Simply incredibly amazing, I knew this game was more than perfect, it has everything a game of this type needs, I'm in love with this game, I don't needapussy, discs have holes too