alt Hacker NewsKotlin folks seem to mostly care about Java as bootstrap to their own ecosystem.
The anti-Java bias, against the platform that made it possible in first place and got JetBrains a business, is quite strong on Android, fostered by the team own attitude usually using legacy Java samples vs Kotlin.
Android folks have good reason to have anti-Java bias. Their bias, as it happens, is against old Java, which they are constrained to use as fallout from the Oracle lawsuits of yore. Kotlin breathed new life into Android in a meaningful way.
On backend teams, I've not personally encountered much anti-JVM bias - people seem to love the platform, but not necessarily the language.
(yes I know there's desugaring that brings a little bit of contemporary Java to Android by compiling new constructs into older bytecode, but it's piecemeal and not a general solution)