I remember as a young lad being taught that one of the virtues of a consumer society was that there was enough production variety that everyone could find a product that meets their needs.
So literally the worst parts of smartphone - unsolicited calls and SMS and dependency of having a phone number in literally every government form, bank and serious website.
In the US. I have yet to find an actual dumbphone, though. There are plenty of feature phones, but those are just low-specced smartphones. Better than nothing, but not what I really want.
If, for instance, the phone is running something like KaiOS, then it's a low-spec smartphone even if it only presents dumbphone functionality.
Weird that smartphones are the exception.