Wow, I think I somehow missed what TPM actually does, if "The goal is Digital Rights Management and computer security" as stated in the article that sounds horrible. A backdoor for the USA and hardware-level DRM, great.

That's actually a contradiction. DRM and security are mutually exclusive. The level of control that enables a remote party to "trust" a computer makes it impossible for the owner to have a rational basis for trusting it. For security you have to have the possibility of complete information and control at every moment, and that is exactly what DRM is designed to exclude.

Oh this is great, this seems to be the most plausible reason.