The anon meme offers the opportunity to offer dissenting opinions. We've had some really interesting, and I think productive, discussions on disability culture that I've otherwise only seen elsewhere under f'lock. People can talk freely without fearing that the Fandom Police will descend upon them.

Also, the meme brings people from very different fandoms together, people who normally don't interact unless their f'lists cross over somehow. You get a lot of different perspectives this way, which only adds to the quality of the discussion.