I guess the point of the person you're responding to is that following the article's advice, Kotlin would probably be a better choice than Scala in most cases.
For example, Kotlin doesn't support higher kinded types so if your problem doesn't require highed kinded types, Kotlin would be a better fit than Scala since it's the "Least powerful language that will solve your problem".
Which will probably lead to the controversial claim that "All programs need higher kinds" followed by the realization that the perceived power of a technology is extremely subjective.
For example, Kotlin doesn't support higher kinded types so if your problem doesn't require highed kinded types, Kotlin would be a better fit than Scala since it's the "Least powerful language that will solve your problem".
Which will probably lead to the controversial claim that "All programs need higher kinds" followed by the realization that the perceived power of a technology is extremely subjective.