Now back to your question about buying and selling accounts, I think we need to agree if each person has his own judgement, right?
I will say if someone really think it's right to leaving negative feedback due to changed hands even the account has no reputation, do it. If someone not really sure if that's case is deserved to get negative feedback or in grey area, just leave a neutral feedback.
Then if you think that's account shouldn't deserved to get negative feedback, you can distrust them.
I just want to add the thread you mentioned before is
fall to cheating in a campaign which deserve to get negative feedback
Everyone is 100% entitled to their opinion. Never going to dispute that.
This is not exactly about the account in that thread. That user dug his own grave everytime he responded. I just used that thread as the reference point since some of what I am asking is being discussed there.