The selective enforcement part is confusing the hell out of me because you seem to be supporting Tecshare's claim from that thread from years ago linked earlier, yet you don't support the argument he made. I don't know much about what you are talking about with EFS, so unless its very relevant to your point, I'll skip it. If its important, I'll look up some threads about it.

You can leave negative feedback just as you've always done. You can't flag him though. Flag = Help! I've been scammed! Negative feedback = Watch out, this guy is shady! I'm not sure why you are under the impression that you have no recourse against scammers now just because there is now a distinct warning and alarm system. If you haven't been scammed, you post a warning. If you have been scammed, you signal the alarm.

This is a step towards the system that I've been preaching all along while somewhat (and I emphasize somewhat) defending your past feedback. Leaving feedback is a good thing. There are a lot of considerations people may or may not care about when deciding to trade with someone. All Theymos did was separate more severe scam accusations to flags, and freed up the space for people to put more subjective things as regular feedback. Subjective feedback isn't necessarily bad as long as you don't misrepresent it. If you want to tag Quickseller for being a liar, some percentage of the forum might agree with that feedback and decide to take your claim to heart. Others wont, and thats perfect, users forming their own opinions by reading and weighing feedback is the most fair system in my opinion. The flags are for "I"ve been scammed!" and misrepresenting your feedback is the only thing that counts as trust abuse in my eyes anyway.

That is sort of where we are at. If Quickseller didn't take your money, then they deserve feedback not a flag.