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Debut lore sucks, also listing their favorite anime/films/music/etc is useless garbage that tells you nothing about their actual tastes.
Yelling out BASED at vtuber's Likes conditioned them to change what their actual likes/dislikes are in order to try to get these positive reactions.
Even anons on 4chan are not immune to this NPC behavior, which is how 3x3 threads on difference boards all end up looking the same.