> works really well in Rust and TypeScript too

And of course Rust and TypeScript were heavily influenced by Haskell... they just don't mention it and call things differently, to avoid the "monads are scary, I need to write a tutorial" effect. Though it's less about monads and more about things like type classes.

Imitation is the sincerest form of flattery.

Are type classes scary? PHP has had them since 2012.