I wouldn't trust most hardware vendors with my wifi password, let alone access to my phone's messages. Hardware vendors have shown time and time again that they don't care about privacy or security. All they care about is shipping their widget and getting you to buy it, and to do that, they will cut corners, ship defective firmware, use easily guessed default passwords, and turn a blind eye to abuse.
As a hardware vendor, you'd achieve "trusted" status by having a decades-long track record of not doing these things.
That's the root of the problem right there. As a hardware vendor, how do you achieve a "trusted" status in their ecosystem?
If only Apple devices can do the Appley things, then it really isn't an ecosystem (at least not what I have in mind when applying that term).