The internet, particularly platforms that allow for user-generated content and anonymous posting, has played a crucial role in the proliferation and diversification of such niche content. Anonymity can provide a shield behind which creators and consumers can hide, feeling safer to explore and express interests that might otherwise be stigmatized.

Ultra shiteating, in its current form, likely emerged from the underground art and performance scenes that thrive in Japan. These environments often celebrate the avant-garde, pushing boundaries of what is considered acceptable or beautiful. Artists and performers in these circles see the body and its functions as raw materials for their work, challenging viewers to confront their own perceptions of disgust, taboo, and the limits of human experience.