Research cannot provide all the answers that using the product daily will reveal.
It's less about if the product suits me and more about global functionality when considering competition moving forward. Any software developer should be considering this.
Commercial software developers consider popularity and sales potential of a platform first and foremost. While I can agree that Android and iOS are different, the popularity of app development and the profitability for the developers who make apps for iOS is an undeniable fact. Where you see limitations, the vast majority (devs and consumers alike) obviously have experienced unparalleled opportunities instead.
I'd suggest that your file-based view of app development represents a highly dated archetype. IOS has proven that it can actually enrich the consumer experience by abandoning this paradigm entirely.