Can you sign an old bitcoin address or altcoin address that you posted on the forum long ago? It will vanish the doubt and I think no one will then think of leaving you any feedback.
Looks like this account has been hacked/bought, deleted a lot of posts, suddenly starts distributing merits, and may have several alternatives in his trust history.
While I do agree with the none bolded parts but I really don't like the bold parts especially when a feedback was written as a personal note.
Looks like - if you are not sure then why you go openly and start judging someone? You could be wrong and if you are wrong then you are effecting the said person and giving him a bad experience of the forum.