Trust feedbacks are unmoderated and DT members have no control over what feedback is left. They have every right to not trust people who are promoting a possibly scam exchange.
Well, it's kind of invalidating the trust system, now you never know if someone was tagged cause they were an actual scammer or if it's just because of a silly signature they decided to wear. Everything is "possibly a scam" anyways, it's cryptocurrency and there is no course of legal action of responsibility.