Shawn Blanc is the second person that I've seen who has written about having a blank home screen on their iPhone in the name of productivity.
Or at least the friction to wasting time on their iPhone.
I have a blank home screen on my PIxel 4. But, that is not for some productivity hack or friction to wasting time on my phone. It's simply because I love being able to see my background without a bunch of junk over it.
I find that the way Android handles app icons is far more ideal than iOS. Simply because if you install an app on Android you do not have to have an app icon on your home screen.