[RjQoLCOSwiIKfpm]

Their software is NOT open source (well, some parts are, but AFAIK it's a minority).

Thus the privacy claims are just advertisement, there is no way to verify them.

Apple devices might as well be fully backdoored.

[madeofpalk]

Apart from some very niche options, so is everything else.

This is about trust. If you don't trust the manufacturer of your hardware (or developers of software), that puts you down a very specific path of what you can happily purchase.