The fact that an app is in the store doesn't mean that uses platform appropriate controls. In fact a lot of applications nowadays are just web app packaged with tools like Ionic, or cross platform applications built with React Native or Flutter that doesn't use "platform-appropriate controls".
If most applications are embedding a web browser, or at least part of a web browser (in case of RN), why not just have applications that... run in a browser? No need to install them, no need to update them, I can just open an URL and they work.
React Native renders down to native iOS component classes, though: there are definitely too many generic UIViews for my taste, but it’s pretty different from electron that just constructs UIs from divs like a web app.
