He wasn't saying use Haskell instead. It was a comparison of the complexity of the type system vs power provided. Most Go programs could have been written in J

He wasn't saying use Haskell instead. It was a comparison of the complexity of the type system vs power provided. Most Go programs could have been written in Java, Scala, C# or Kotlin and been shorter, more predictable and probably faster. Certainly more maintainable (ok maybe not for Scala).