This discussion has become so absurd.
First of all, KingBoonen, I suppose you know that RedheadDane is on the spectrum. I have never experienced her getting into a fight for fighting's sake, but it's hard for her to let things go, so if the issue is clear to you just stop replying.
Then, I think it's ridiculous to come up with the laws of privacy regarding a temporary ban from a forum - especially since everybody can see someone was banned in comments about this ban afterwards still, and the permanent bans, which might be more important in someone's CV or whatever, are visible for all time with that yellow sign.
Once in a lifetime I have to totally agree with Netserk. And I think this has been said by many people over time now: Members would appreciate a simple notification if a ban is permanent or not or in general how long it will take. Whether done manually in an information thread or by an adequate banner "banned"/"banned for 2 days"/banned for 2 weeks" or "banned until..."
People are always worried that members they got used to are banned forever and it causes distress in the forum, much more so then when there would be a simple notification.
It's clear that this is not a moderation issue but one from the administrative side, but definitely something the administration of the forum should think about. Whether people then discuss the possible reason for a ban anywhere in the forum is independent from the notification. A thread where such infos are given (in case it's too much work to change the code for the banners) can be locked so as not to incite discussion.
Problem is that this forum is lead by people for whom this forum is just one in a line - they don't know the particular style or people here. They take rules which seem logical from an abstract point of view and are easiest to handle from above.