If Vod wants to say this user is scamming Amazon, he must write it explicitly.
That's literally what he did.
But AFAIK he is not a policeman and he doesn't know how SergeJeletski got these accounts.
Using the trust system doesn't require one to be a "policeman". If Vod thinks that the OP is high-risk he posts a negative trust rating. If other users think that Vod is wrong more often than not they exclude Vod from their trust lists (or for any other reason - that was just an example).
I don't think Vod is wrong in this case.