The flaw in your reasoning is in "user generated content". Newspapers are not user generated, while lots of websites (like this one) are. That's why safe harbor

The flaw in your reasoning is in "user generated content". Newspapers are not user generated, while lots of websites (like this one) are. That's why safe harbor conditions exist, allowing sites like these to have free and meaningful discussion, without the threat of massive fines or lawsuits because a single user may do something irresponsible.