It has one advantage compared to Haskell though: as a Java/Kotlin (or even Python or javascript) developer, you can start with it an be productive immediately. You can then slowly absorb new concepts until you are pretty much ready to write full-fledged Haskell.

That's why some call it Haskellator. :)

This also means that many codebases have different styles though, whereas in Haskell you have one style (FP).