In this case, one of the same people who says DNS filtering will break the Internet just one year ago advocated a whole new piece of infrastructure to allow people to filter the DNS.

When Vixie did it, it was to suppress malware sites. I agree that this is a more admirable use of fiat third-party filtering than anti-piracy (note though that unlike the rest of HN, I think anti-piracy is a fine goal). But fundamentally, what's happening in both cases is mostly the same; other people making decisions about what you can and can't see on the Internet. And my point is, maybe that's OK.

Note also that nobody can impeach the DNS administrators and standards group sherpas.

Filtering infrastructure is one thing, this is an actual law you could break (accidentally even) and then get into real trouble.