Those are only partially array oriented languages. I use J for most of my personal projects because it's terse and highly productive. From empty emacs buffer to something that works; 5x faster than developing from raw R, and I'm bad at J and decent at R. Of course if R has a package which does what I need, it's easier to use that. There's also the matter that for medium big data problems, J can do plenty that R will never be able to do.

Terseness is a feature. It's also a good design in general, even though it breaks most people's brains.