there is "some private data" and there is "all private data"

if you want more fine grained control how about you propose a mechanism for app specific passwords to isolate apps from each other

but you do realise that app state for many general things should NOT be app specific

like, messages i have read already

like whether i want you to put your app's ID on my events

if you don't want to share private data

DON"T FUCKING SHARE PRIVATE DATA don't assume that's what normie every day... even advanced user like me... wants.