I'm surprised to see Kotlin in your list. Google has stated they are increasingly moving Android development to a Kotlin-first ideology. New official libraries produced by Google for Android are designed with Kotlin chiefly in mind, so it may provide significant benefits to support, community, and documentation.
Considering the popularity of the Android platform and Google's control over it, I don't think it is a bad idea to develop an Android app in Kotlin. According to Google, their Maps, Home, Play, Drive, and Messages apps are all built in Kotlin, and my personal experience is that Android developers like and prefer Kotlin.
Considering the popularity of the Android platform and Google's control over it, I don't think it is a bad idea to develop an Android app in Kotlin. According to Google, their Maps, Home, Play, Drive, and Messages apps are all built in Kotlin, and my personal experience is that Android developers like and prefer Kotlin.