Selling computers that respect your privacy and run on generic hardware + magic kill switches, that somehow fix, the privacy issues that their closed source hardware brings, is a joke.
(For example: You can read a lot about the shady low-level stuff, intel implemented in it's (newer) CPUs, on the web.)

I dare to assert, that an old IBM Thinkpad (running libreboot), respects your privacy more, than Purism's overpriced toys....altough this solution still isnt perfect.