Right. This guy has been around for a long, long time under many different names. Pretty sure he's been banned a few times as well.
Why on earth would you trust this person when there are several literal red flags on their account? They have a trust score of -10 and there is a message that says
Warning: One or more bitcointalk.org users have reported that they strongly believe that the creator of this topic is a scammer.
at the top of all their threads.
I agree this account should be banned as they are obviously a malicious nuisance, but you plowed through multiple warnings to engage in a very, very stupid deal. Think about it for a moment: if what you were buying was legit, why wouldn't the owner just cash out the BTC as you were intending?