There's a lot of users are abusing merit points, if you can't notice some of them are continues doing this. But the list given in this thread are only suspected so it means that most that the evidence given are not yet proven. I was sad because some of users are continues in buying merit or they can exchange with the others. I advise to them stop doing that because karma was always on the back. Maybe you improve your post, give the best quality you can and be creative and informative your post to easily earn merit points.
I want to quote your post, because you have a point. But the sudden reality is no one cheaters will admit their sin, even they are caught in the act. For now it's better to watched all users in the list because they have now starting to attempt cheating. In addition if we prove that this list are continue making some malicious act, then report them into the moderator. For now since we have no concrete evidence it's better to be quite and observed their move.