[eli]

There's little to stop copyright holders from using the takedown provision in bad faith. Sure, they have to swear they believe the content is infringing... but how can anyone disprove that? And there are plenty of companies that seem to truly believe that there's basically no fair use of their content whatsoever.

You also forgot to mention that although the provider is supposed to restore the content within 14, they're also not allowed to do so any earlier than 10 business days. They have to give the copyright holder time to consider if they want to bring a lawsuit. So if I don't like, say, a negative book review you wrote, I can knock it offline for minimum two weeks with a single spurious letter.

There are many examples of copyright holders using the DMCA takedown in bad faith to silence critics.