Unless you're one of the two involved in the scam report, do NOT write ANYTHING in that thread.
Q: "But this guy is trusted, he would never scam anyone" / "This guy is a scammer, ban him already"
A: Doesnt matter how good/bad you THINK someone is, one wrong doing is enough. If you have any proof of someone scamming you, then make a separate scam report between you and the scammer.