Yeah. My sense is that Android developers aren't nearly as interested in 'Java the write once run everywhere platform' as developers who were adopting Java in the 1990s. So, like Apple and ObjectiveC, mobile developers are just willing to go where the platform takes them rather than push for evolution of the language per se.
Maybe it's just that mobile apps are much smaller than the monsters enterprise devs need language help to manage.
Speaking as a sometime Android developer, I use Java for Android because I have to, not because I'm particularly fond of Java. The biggest upside of a JVM on Android in this respect is that I have alternative languages like Kotlin available.
Maybe it's just that mobile apps are much smaller than the monsters enterprise devs need language help to manage.