I don't think so. Look at Scala, which is in the same position as Kotlin. Still, it has a far superior featureset both compared to Java and Kotlin and has had p

I don't think so. Look at Scala, which is in the same position as Kotlin. Still, it has a far superior featureset both compared to Java and Kotlin and has had pattern matching since almost forever (in fact, Java's pattern matching, sealed classes etc. are heavily inspired by Scala's). And it manages quite fine to do all these things, even before the JVM improved to support those features better in a native way.