Basically the author thinks that you can test the market if a particular idea / app is worth making by releasing on Android first. The problem is that the android users will most likely hate the UI and the bugs as it will probably be thrown together.
When releasing an app on iOS, you don't have to include ALL features, you can release an app that is well designed and functions well with limited functionality. Then add features as you need to.
That's what we did when we released our app. We released for iOS first and then for android, but we gradually added features as needed or wanted.