Having used pixel phones as long as they've been around, and used some AOSP based OS, I cannot imagine what it would be to not be able to block network access on a per-application basis.

Calculator app? No, you don't need to read my contacts or network access to ship it to God knows who. Keyboard app that is an ipso keylogger, also no. Launcher, no... Image gallery? Fuck off.

I trust companies to do the wrong thing, always. They all sell your data. If they ever get caught, the punishment will be less than what they made by it, so why wouldn't they.