As an alternative to learning Kotlin on Android, you can spend the time learning flutter. Then you get concise code which works on Android and IOS now and on other platforms in the future - including desktops.
A big plus for Kotlin is that being a jetbrains project, it has top of the line intellij tooling support right at release date.
With the big investment they are doing in Fuchsia it seem unlikely they will abandon it soon.
Please give us some sources, as to me it's just a project a team there is developing, and so far it can just as well be an experiment with no future.