You misunderstand. If the app isn't installed those hyperlinks fall back to the web and not any other platform. You think it's ok to make a new platform where you're required to install every app ahead of time, or clicking any hyperlink just takes you to the web instead? You can't possibly replace the web that way.

There's no way to add a new hyperlinked platform to iOS that's not the web.

One problem I've had when developing for iOS is that universal links don't "trigger" after a redirect, which is very relevant for sending emails though something like MailChimp with click-tracking.