>the API is more restrictive
> there are things you can do on Android that are impossible on an iPhone
>such poor UI design
Do you honestly think these are the things an average consumer thinks about when deciding what phone to get?
Some things Android does way better, some it does way worse. As far as ergonomics go, Apple went way too far recently with hiding functionality under gestures or pressure sensitivity, making them not discoverable and sometimes finicky to activate. I'm talking basics, like app switching.
On the other hand, for some apps, the limitations mean they have to hold to OS GUI guides more closely.