One more time, what mobile phone owners need is an intermediary layer in the mobile OS where they can either manually or programmatically (via e.g. a random number generator) lie to higher-level application layers about the phone's data. It's not enough to just turn off permission to access this data (because then the apps will often just refuse to work); it's essential to be able to lie to these apps in a way that they cannot tell the data is fake. This is a perfect opportunity to build weaponized AI that acts on behalf of users against adtech.

On Android, if you install Xposed, there's XPrivacy [0], which essentially had this premise. Unfortunately, it only supports versions 4.0.3-5.1.1 (and is no longer maintained).

I haven't been following the rooting community for a while, so someone can probably correct me if there's a better alternative now, but I believe the replacement is XPrivacyLua [1].

[0] https://github.com/M66B/XPrivacy

[1] https://www.xda-developers.com/xprivacylua-xposed-module-pri...