Let’s talk about a problem - software cannot be trusted anymore. In the past, if I allowed an app to send me notifications, I’d get alerted for things I wanted to hear about. Now every app uses spurious notifications as a way to artificially boost their daily active user count. I am one by one having to shut off notifications on apps that used to be reliable products. I’ve disabled notifications on linkedin because it keeps sending me ads and random unnecessary alerts.
We fundamentally need a new type of option: the ability to grant software privileges that are completely phony. I need to be able to *pretend* to grant an app the ability to send me notifications, but then to have all those notifications sent into the void. Untrustworthy software should not be able to know what privileges I have granted it.

@Tedspence XPrivacyLua does this on #Android AFAIK

https://github.com/M66B/XPrivacyLua
It is similar in status to uMatrix: no longer supported, still working (for now)

However, it has a barrier to use in the form of requiring an unlocked, rooted Android device, which thus may imply a bit of technical know-how and comfort to do so...

I doubt Google would ever deliver a fake-data option, but I could see something like GrapheneOS do this (as Lineage is too mainline/AOSP directed).

GitHub - M66B/XPrivacyLua: Really simple to use privacy manager for Android 6.0 Marshmallow and later

Really simple to use privacy manager for Android 6.0 Marshmallow and later - M66B/XPrivacyLua

GitHub