I understand what you say. But we're talking about why he's banned. You can look through his profile. just a hunter. Besides, he does not participate in any other activities
When I looked at the post history of that banned account he got bounty reports for 30+ pages in his 34 pages post history so he maybe banned for spamming or he copy pastes some of the posts.Just wait for staff answer if you want to know exact reason.
Edit: see the above post he got banned for copy paste. /thread