> 1) The language is too unstable Thankfully not anymore. They got their act together and have been maintaining compatibility since Scala 3.0.0 has been releas

> 1) The language is too unstable Thankfully not anymore. They got their act together and have been maintaining compatibility since Scala 3.0.0 has been released in May 2021, which is almost 4 years and counting. https://github.com/scala/scala3/releases/tag/3.0.0 https://github.com/scala/scala3/releases/tag/3.0.0 Scala 3.x is to remain compatible for the whole 3.x series (think of semantic versioning). There's no Scala 4 (breaking with Scala 3) in sight. Also, Scala 3 and Scala 2.13 JARs are also compatible with each other, which helped with the transition. > 2) The tooling around it is not the best sbt may not be good. But Mill is much better than either Maven or Gradle. Especially Gradle. Bleep is also promising. Scalafmt is widely used and liked. Scalafix -- the linter/fixer -- is used a bit less, but still of a good quality.