[papercrane]

It largely doesn't affect Kotlin's coroutines. Kotlin targets platforms where Loom is not available (e.g. Android, native.)

As a developer if you're targeting the JVM with virtual threads you may decide to use those for some workloads instead of coroutines.

In the future when targeting the JVM Kotlin maybe can use the features exposed by Project Loom to execute coroutines more efficiently, but it's not clear to me that there's much for Kotlin to gain there, maybe some small gains in performance.