If it's all-or-nothing then it's always going to be nothing with a phone, because the position and activity of your device are perfectly transparent to the phone carrier you're using, by mere design of being a mobile phone. They know when you're awake, when you sleep, where you are at all time, when you use a VPN and when you don't, etc, etc.

You can never hide everything, so the question is where you set the bar. GrapheneOS and /e/ have a different bar, making different trade-offs for different user base, and that's absolutely fine.