I don't really have any more to add other than Rui's comments above - If a site is producing content you don't like, simply stop patronising that site because you're never going to (and shouldn't be able to, imho) stop people from having and stating views you find offensive. I'd rather these people made themselves known so they can be taken to task or avoided than the alternative, which is actively restricting or lobbying to restrict people's freedom of speech. MAL is a privately run site just like AUKN - The owners can decide what content they want to allow and what content they don't.
I think in a larger context, the changing attitude towards the Nazis and their crimes was inevitable. I mean, is anybody really offended by admiration for the Roman Empire any more, despite all the horrific war crimes, slavery and public torture they got up to? No, because it's so far out of living memory no-one feels personally affected by it. As time marches on, the same thing is going to happen with the Nazis. That's just the way humanity's view of history evolves whether people like it or not.
On a personal note, while the mantra of terrible events is usually "never forget" I often wonder if it would be better if we did forget, at least that way the future of humanity wouldn't be so stymied by the old grudges, prejudices and unnecessary guilt and victim complexes of the descendants of people on both the giving and receiving ends of oppression and suffering but who were in no way personally involved.