I would imagine that the data on the page could change, and therefore it would be irresponsible to assume that the link once bad is always bad.
Secondly, you should note that this is for posting news and articles, and such type of stuff does not change often! I am talking about banning the link - the url, not the whole domain!
And even if we suppose what you say is correct, then they should ban it at least for a while... like 3 months ban or something!