The "secret list" meme is fed and nurtured by drama-mongers who incessantly scream "OMG!!! SECRET LIST!!! EVERYONE KNEW SHE WAS GOING TO BLOCK!!!! 5 PEOPLE SUPPORTED THE BLOCK!! DUROVA IS TAKING THE FALL FOR THEM!!!"
Wikia currently supports over 3500 mailing lists; the question is, are those promoting the "secret list" meme deliberately malicious or irreparably clueless?
You can generally figure a few with an agenda exploiting the naive. The agenda can be as simple as having fun.
Fred