I did read the post. Way easier to install GrapheneOS then it is to fiddle with non-existent privacy controls on stock. GrapheneOS is highly popular and pretty much just works so the on life support thing is BS. Yes if you must have one of the few apps that don't work, sure you'll have to use stock or just not use the app. I've not found any apps that I need that don't run on GrapheneOS but there are some.
Keep in mind too, that not all apps work on all stock phones either for one reason or another.