I don't know, I have not done any business with him, so tagging him negative would not be fair. Others did and gave their feedback, long time ago. That's why such function exists after all.
I believe that rating was well thought through here and can be trusted, why else to have it. And that means crypto-rainbow or deeperx as he calls himself now is not to be trusted based on the minus 16 score. Changing of an account name does not mean you get a new life.