I actually said I think services like S3 / EC2 / Rackspace should have safe harbor protection, as they are as content-agnostic as possible under the law (like landlords, not nightclub owners.)
On Amazon, your content is at http://example.com/ . Your domain. Your site.
This is not about content. If YouTube allowed any content, that wouldn't change anything. If Amazon would only allow videos (but let you have your domain name), that wouldn't change anything either.