I disagree.
I don’t understand how they can’t be useful. If someone makes use of an iPad, which many do, a foldable iPhone that turns into such a product is a huge win.
I have a iPad Pro that I don’t carry everywhere, but is very handy for business admin. When I have that iPad in my pocket at all times in the way of a foldable iPhone, I will be a very happy boy.
Roll on 2026, Apple, and take my money.