Yes, exactly. And yes, also, fandom (especially a specific fandom where incest is the prime pairing) is it's own echo chamber *and* circular firing squad. So, if one fan represents a hundred thousand non-fans (or more), and on fan who treats incest as a lark or however it is objected to represents a hundred other fans that treat the topic in the manner which is acceptable, I think our actual impact on the world at large is pretty damn negligent.
no subject