I respect people's right to use apple products, but please stop asserting "privacy", big corps doesn't give a shit.
There are more than these 2, they are just ubiquitous.
Sailfish is another one, UBPorts, Danctnix, ... They have no marketshare worth considering for companies so they lock their services down to the 2 big ones and everything else in their eyes is "unsupported" at best and "not secure" at worst.