It does not really resolve problem for the fully paranoid. Instead (and in addition to) of service providers the backdoors could be installed to your software,

It does not really resolve problem for the fully paranoid. Instead (and in addition to) of service providers the backdoors could be installed to your software, Raspberry Pi, or even to silicon. There is small number of providers of any of these, so they are quite easy to be controlled by interested parties. Solution: publish designs, so everyone will write your own software, build your own hardware.