Scala had an unnatural dependency on Java, not JVM. I.e., imitating not just some patterns but copying its flawed interfaces. For example, Scala could express and bypass decades of cruft in the Java Collections API. Did it choose to do it?

To paraphrase former Scala developer and present poker player, "If Java cut its nose, would you Scala... Oh god, stop! The blood, the blood!"

Everyone who wants to talk to low-level code has to have C ABI. The equivalent Scalaism in Rust would be if Rust reimplemented the C-inspired java.util.Date. Yes. Monday should be 0, not an enum. Because C did it.