I have to wonder why still post "foldables are a solution in search of a problem" anymore. I suppose they are just looking to stir the pot. I will break it down for you one more time:
Problem: Having to use and charge two separate devices (phone and mini tablet) and carry both of them around if you are mobile.
Solution: A book style foldable phone, which is a compact and lightweight device that is a phone and mini tablet in one.
I really don't understand why this is so difficult to comprehend. I also don't see why anyone would care if Apple adds a foldable iPhone to their line up. If they do, I hope it is a book style foldable. And yes, I know foldables aren't for everyone, but hating on something you haven't even owned and experienced is laughable. And please save the "well you're compromising this and that" speech because after owning six foldables, currently the OnePlus Open, I can tell you in my experience the compromise was using an iPhone and an iPad mini separately. And if you want to talk about cost, remember to get as close to the same specs between the three book style foldables in the US and an iPhone/iPad Mini combo, you'd have to drop $2198 (iPhone 15PM 512gb and iPad Mini 256gb with wi-fi and cellular). My OnePlus Open was $1,699, with 512gb storage and remember when it is in tablet mode you have wi-fi and cellular, which is why you'd need a wi-fi and cellular iPad Mini in this scenario.