I had heard about it a long time ago, but between not being familiar with Sailor Moon at the time and not liking magical girl shows, I didn't see any reason to check it out.
Now I'm much more aware and fond of MG shows (and read the entire manga of Sailor Moon). Still not gonna read Sailor Nothing. As someone who felt like Madoka was beating the viewer over the head with its misery and cynicism, I have absolutely no desire to give something considered even more dark the time of day.