Excellent question, indeed, why?
Maybe you can ask the PTB, or perhaps simply make a list of those you deem not sufficiently pure, and post it, and petition to have at least those people removed?
Worth a try, give it a shot.
What have you to lose by trying?
Maybe you can ask the PTB,
***I already did. Didn’t you read the post to JimRob where me and Rogue Yam agreed?