I've been thinking the exact same thing. But then I think, "I need to be able to install apps like proton mail, my bank app, and Signal. But I NEED a web browser because I do a lot of personal business-related things on my phone. Well, now I'm back at just having a smartphone."

I don't know, I need all the functionality of a smartphone, but I want some kind of physical control to keep me off it until I actually need it for something. Mostly something that makes using it just difficult enough that it's not worth using only because of boredom. And software controls are just too easy to turn off.