That said, it could potentially be his mate's account that was coincidentally created and used at JG's place or whatever.
Sure, what a string of coincidences
Btw, this place is pretty huge, both in number of users and subforums, there are people with 10k+ posts who are almost unknown outside of subforum(s) where they frequent. If anyone succeeds to get flagged here as a double account after a mere 50-100 posts or so, that alone says enough
I am neither. Please tell me in what way Johnny Groove's supposed double account disrupted the forum or your experience on it. Or other harmless double accounts as well. They rarely do, and when they do they should be banned for forum disruptions, not for being a double account. For instance, say I created another account from my laptop and made just one post with it, something 'Federer in 2' in a Federer WWW thread and then never used it again. Would this make me a very bizarre individual? Yes, probably. Does thing bring the forum into disrupt in any way? No. Would the ensuing 3 month ban if I got caught have any rational justification? No.
Even for previously permabanned accounts, it still makes no sense. If a previously banned poster comes back in another account as a law abiding positive poster, it's absurd to ban him just because he's a DA. In short, banning solely on grounds of being a DA ie treating all double accounts equally is an inane system and one that actually favors malicious people/posters over naive yet not badly intentioned ones.
Obviously you are
Chances that you will be caught with just 1 post are zero, so the example doesn't mean anything. I still haven't heard 100% who the double account was, only guessing, so it's impossible to say anything conclusive really. Previously banned accounts never come back as positive posters, otherwise they wouldn't have been banned in the first place. If they come back, it's usually to troll more/harder.