Enabling DRM in the kernel?

Of course not. The MPAA's DVD player will refuse to run on your compromised CPU, but everything else will be fine. This is no different from a compromised Blue Ray player. It may not play new movies, but it will continue to play DVD's, CD's and whatever.

There are lots of uses this technology can be put to. I always think of the electricity meter in your house. Its a piece of the equipment on your property which you happily give up control over. You give it up the control because you like electricity. Ditto for a cable smart card, a SIM in your phone, your drivers license, your passport, the odometer in your car. All things you aren't allowed to tamper with.

When it comes to TXT, you would probably be happy to let you bank have a private corner on your computer in return for not charging you fees for small transactions. Perhaps you might like to give part of it to your favourite distro as a build machine. Maybe you want it to run P2P software will not allow snooping, and will only talk to valid copies of itself.

There are lots of good uses. Sadly there are also lots of nasty uses as well. We do live in interesting times.