You are confused or making bad-faith comparisons. You're comparing the efficiency of the app that Skip produces, and the development environment (which is Xcod

You are confused or making bad-faith comparisons. You're comparing the efficiency of the app that Skip produces, and the development environment (which is Xcode and Android Studio). And you are comparing the cross-platform capabilities of the apps you can produce with Skip with the cross-platform capabilities of the development environments (which are still just Xcode and Android Studio).