It's wild that this article only mentioned Haskell in passing when libraries like FreeR, fused-effects, and etc have been been around for a long time, and what

It's wild that this article only mentioned Haskell in passing when libraries like FreeR, fused-effects, and etc have been been around for a long time, and what people really worry about at this point is how to get mtl (monad transformer library) speeds out of effects systems (and even that was solved IIRC). Sure it's a scala-focused article but come on -- Haskell is far more ergonomic, and honestly easier on the eyes than Scala.