Really? It's basically impossible to distribute apps for iOS outside the AppStore and very difficult (all security, warranty warnings, settings, etc.) to distribute them outside the PlayStore.
Yeah... really. As a user, I (and >99% of others) just don't care about the distribution channel. The stores work. I've never been hit by a security issue. Choice is plentiful. Prices are ok.
So "totally broken" just isn't a rational description.
Thankfully so. Apple keeps the App Store pretty clean, legacy apps, that are not maintained enough don't make it to the next iOS release and their capability system means I don't have to trust third party apps with anything.
Of course, there are cases that essentially suffer from this, but for me as a user, I've got to say I'm pretty satisfied.
