No they aren't contradictory. What is the compatibility of a feature that even doesn't exist in Kotlin? How can be the lack of way to call a Scala macro from Ja

No they aren't contradictory. What is the compatibility of a feature that even doesn't exist in Kotlin? How can be the lack of way to call a Scala macro from Java a disadvantage, when Kotlin doesn't allow you to call a macro from neither Java nor Kotlin, because this feature doesn't exist? Scala is strictly superior in this case. And you need to avoid some features only in code that gets called from Java, not the whole codebase. Calling it this direction is very rare and not really a problem. Most codebases call Java from Scala and this is easy and fully supported.