Negative trust rating requirement =/= being a scammer. You don't understand the system properly and I kinda think that you never did (which is fine as it includes the super-majority of the users) and we're discussing something that shouldn't be discussed here. Additionally, there's no policy. Anyone could tag you for being a scammer, even when you're in-fact not a scammer; right this second and we couldn't prevent it. We can only take reactive measures (to alleviate improper tags).
Furthermore, there are various perspectives that properly argue that e.g. advertising a scam makes you complicit i.e. a scammer yourself even if there's no malicious intent. We can go into many discussions pertaining to semantics and viewpoints, but this just wastes time (right now, and in this thread - start another).

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This whole ordeal has been handled were poorly, to the point that Yobit managed to advertise their "scamBox" for >1 month up to the point that they shut it down, not us. We have failed this time, just failed. This is what the focus should be not who got labeled how in the crossfire or the semantics behind stated words et. al.