Everyone knows your location: tracking myself down through in-app ads

> There's no "personal information" here, but honestly this amount of data shared with an arbitrary list of 3rd parties is scary. Why do they need to know my screen brightness, memory amount, current volume and if I'm wearing headphones?

Screen brightness, boot time, memory, and network operator could probably fingerprint any device all by itself.

A lot of people have "autobrightness" on. I'd think brightness doesn't help much here

Kind of a joke, but it could be useful for determining if they should serve light-mode or dark-mode ads. But I suppose they could just detect if dark/light mode are enabled.