These are good points. In my opinion, Kotlin is easy to get into for anyone with some programming experience (not necessarily Java) and it is very well document

These are good points. In my opinion, Kotlin is easy to get into for anyone with some programming experience (not necessarily Java) and it is very well documented. The issue though is the tooling. Maven or Gradle is what's hard to get into, not Kotlin itself as a language. It sucks that there is such a barrier to just get things running. If there was a simple "rustup" or "cargo" like command that sets everything up imo. it would be more popular.