I'd love to take your word for it, but it would certainly help if you can show the videos that got you banned. If what you're saying is true, I'd have posted about it on the forums with the "evidence" after the appeal got denied, because that doesn't sound right at all (unless there's more to the story).
It's what I did when I got banned for something ridiculous. The mod in question was still beyond childish about it, but at least it was out in the open and unbanned me after others got to see it
So definitely not impossible this happened, but I just don't think it's a common occurrence or a rule.