That's a nonsense idea because it fails to define how low-quality undeclared slop (LQUS) can accurately even be classified. Also, if money is on the line, it will be taken away even when the article is not LQUS.

I agree, but there is a slight alteration of the proposal which could work rather well. Pay $10 to get in, but no change to the procedures by which your account is revoked. This puts a price on sock puppets, while almost any legitimate, normal user only wants one account, and gets it for a trivial fee. This may also relax the pressure to monetize through ads, which could have perks.