Yes that is a major part of it, and according to my understanding a smartphone is less privacy friendly as compared to a feature phone because its sending location data more frequently, on the feature phone, if I take out the batteries and run it on 2G, I can prevent the tracking element + achieve the minimal setup as compared to using a smartphone.
I will check out the other links you mentioned below.
But again just for confirmation, my current setup";
- fedora laptop for work and personal and anonymous browsing in separate browsers/browser profiles
- a feature phone to make calls
- an android phone for work
- waydroid in case I use an app that must require a mobile device to setup
Offers enough privacy?
And my future plan is still a bit unsure but so far I have decided to use one of the following (in the order of preference) in addition to the feature phone and work android;
- save up for a mac
- pixel 9 with GOS
- buy an ipad for creativity
- buy an iphone