Regarding clear objective standards to ascertain what might be worthy of a tag - I agree with you entirely. The problem however was (and still is) the lack of general consensus. If there was a uniformed stance against Yobit nothing would have made me happier and if there will be a uniformed stance for all present and future scams then it would be a great way to proceed.
You agree with me entirely? It seems you don't based on your statements. You are literally saying if everyone just agreed with me, everything would be fine, and since there is no consensus the only solution is to agree with your view. Either it is an objective standard or it is not. Guilt via association is not an objective standard and the reward for such activities is almost completely negative in sum even if a minuscule amount of scams are delayed. That is the problem, a fool and his money are soon parted regardless of how many red tags you can shit out. It accomplishes nothing and has many negative effects. All this Yobit situation demonstrates is public discussion works. The trust system just brought attention to it because people were abusing it.