I think apple has high trust only because they repeat their message all the time.
However, just buy an apple device and try to use it. You cannot use it without apple allowing it. You must connect to apple and activate your device. And as part of activation, you get a chance to read apple's privacy policy. Literally thousands of pages of privacy policy without the ability to DO anything, like say "No". And everything in the os phones home, continuously.
If you are a european and disable location services, and use a european vpn, apple still won't let you use the european app store because the phone knows your location. sigh.