That's not a really valid reason to call him out for doing that without any substantial proof linking them together. Plenty of people create an account here just to vouch for a guy they bought something from.
And no one should take a brand new account's one single post ever seriously, or trust feedback or absolutely in any case. This is kind of harmless and there is no way for us to prove that it is malignant. Just let it rest until you have actionable fact that he is trying to scam people.
