Scams are unmoderated and would not get anyone kicked off the forum whether or not they are guilt, consequences of scams could be a red trust or a flag.
The op was referring to users who expose how they caught out a scam attempt and if it should be public, and it is necessary to detail how you arrived at that conclusion to convince others as well. Even though it could be counter productive by making scammers more aware, it is a necessary system.