Well, be careful how you word it. At the core of the problem, nobody has control over their devices. If you beat a drum complaining about Nvidia having DMA access then you have to go after Apple and Microsoft next, which would probably lead to most people getting confused. If they found out about PRISM or XKeyscore, they would probably feel hopeless and give up.

Treating privacy in the abstract is how you help people meaningfully resist it. In the literal sense, we can do very little to ensure our privacy on consumer hardware.