I think you're ignoring the fact that App Store didn't allow PWAs until fairly recently, among a bunch of other things. Mobile web apps aren't slow or clunky or feature-poor and you can design your interface however you want now... except on Apple products. It sounds like your issue is the poor support from Apple, which is exactly what I was getting at. I'd encourage you to read through the blog post I linked here:
https://blog.pwabuilder.com/posts/publish-your-pwa-to-the-io...
> PWAs remain a second-class citizen on iOS
> PWABuilder doesn’t guarantee that your app will be accepted into Apple’s App Store.
> In 2019, Apple released new guidelines for HTML5 apps in the App Store
2019 isn't close to a decade.