Do you think this would have been averted if they took all the measures you are proposing ? There are no set guide lines here according to which the government is taking down stuff.. This is not DMCA related to create an process to take down stuff.. Even if they could not find the contact page, taking the whole website seems to be ridiculous thing to do.

I think things like this will make websites with user generated content to move away from .com domains and even move into countries where there is more due process to things like this.