I really appreciate your opinion, but the continuous cyber harassment by this member together with the abuse of this forum for military weapon deals is enough for a permanent ban.
Is he really harassing you, or is he only harassing you because you are harassing him? Regardless, that's not how the forum works, and the rules say nothing about getting banned for weapons sales. So, you're simply wrong here.
Alternatively, the entire forum has to be closed.
No, it doesn't. Nobody is going to buckle to your demands, sorry. You're on your own here.