Author here. I understand that my post and what I'm trying to say is unclear. And that there are too many different aspects to all this.
What I'm trying to say in the post specifically about Google is that I personally think that they have too much power. They can and will shut down a whole domain for four billion users. That is too much power no matter the intentions, in my opinion. I can agree that the intentions are good and that the net effect is positive on the whole, though.
On the "different aspects" side of things, I'm not sure I agree with the _works_ claim you make. I guess it depends on what your definition of works is, but having a blacklist as you tool to fight bad guys is not something that works very well in my opinion. Yes, specifically my own assets would not have been impacted, had I used a separate domain earlier. But the point still stands.
The fact that it took so long to move user content off the main domain is of course on me. I'm taking some heat here for saying this is more important than one (including me) might think. But nonetheless, let it be a lesson for those of you out there who think that moving that forum / upload functionality / wiki / CMS to its own domain (not subdomain) can be done tomorrow instead of today.