This kind of compromise probably sounds reasonable to someone trying to break an intractable smartphone addiction.

But as someone who has never really had a problem with my smartphone, taking photos of a map and trying to pan around on a dumb phone sounds like pure torture. I can’t imagine it working well for any of the locations I actually need to pull up a map for, which are almost exclusively far away and require long sets of directions.

It’s funny what different people will consider torture or not

I guess the idea is that over time you'd learn to navigate without needing the turn by turn instructions that a smartphone spits out - like how people used to do it. It wouldn't just be to break smartphone dependence, but to gain a sense of direction if that makes sense?

Though your point about the phone/map telling you if the shop is open or not is a pretty strong advantage

Serious question: Is there a dumbphone that has a camera that is even remotely near a flagship from the last year or two? (Pixel/iPhone/Samsung) I wouldn't realistically carry around a camera everywhere because of bulk/UX, yet I (and most people) do care about having a pretty decent camera to take photos day to day.

Part of the reason modern flagships take such great pictures is computational photography. A dumbphone almost by definition can't do that, even if the optics were equal.

In 2022 I did a year long stint on a Nokia 110 4G and I carried a Canon PowerShot G7X Mark 3 around. It's a one inch sensor compact camera that fit my pocket just as well as my smartphone did (and since there's nothing to do but make phone calls and text with a super shitty UX that phone lived in my backpack). The UX for a camera is more annoying depending on how and why you take pictures. It does force you to be a little more mindful and focused on what you're doing though.