I do not believe in your logic still. Anyways, its not blackmail just merely the fact that I don't trust his judgment. Hence the negative trust...
"Negative trust removed, not because of this thread but due to a change in opinion of mine: reference"
It was a threat where if your demands wern't met there would be negative consequences for him. You can argue that's blackmail. And If you don't trust someone's ratings you can exclude them from your trust by adding a ~. If I and Quickseller don't trust your ratings would it be ok for us to leave negative for you? Leaving negative feedback for ponzis isn't exactly trust abuse but threatening people to remove their valid ratings is.