Scala is not tied to a single IDE, it works great in VScode, Eclipse and Intellij and anything else that supports LSP, which is an open standard. And it works really well - including type inference and very advanced implicits stuff.
And recently Scala got excellent incremental compilation support by Bloop from ScalaCenter, which not only blows Kotlin out of the water but even Java with Gradle. The last year I develop purely in Java and I use Scala bloop for day-to-day development, because I couldn't stand multi-minute Gradle compile times. Getting incremental compile times counted in milliseconds (!) or single seconds at worst is something very hard to give up on.