I was once in a hackerspace that held regular "show and tell" nights for people to present interesting technology projects. We eventually hit a rash of non-regulars bringing in "projects" that were essentially sales-pitches for devices sold through multi-level marketing scams. Figuring out how to ban those without blocking someone who intended to monetize their projects was tricky.

Point being: just because a thing technically fits the genre does not mean it is something that the audience wants to listen to.