I'm not being naive, I was agreeing with you. Too many times this happens, and these "trusted" members always get away with it, because the "less-trusted" members feel they do not need to be cautious or gather evidence during the trade, leaving them fucked in the end.
The only reason I felt the need to say you need more evidence is because I know how the mods work that verify the scam reports in the Report a Scammer section. They will look at this, and the response will be "We need proof."
Just make sure you take every trade seriously. A trade of 10b should be taken just as serious as a trade of a membership PIN. Because if you are ultimately scammed, you will have the evidence, if taken proper caution during the trade, to get the member banned and stop another innocent member from being tricked and scammed.