Because it only takes one user to make language more popular. For example, Grammarly's first developer used Lisp as his main language, their linguistics is stil

Because it only takes one user to make language more popular. For example, Grammarly's first developer used Lisp as his main language, their linguistics is still written in a Lisp-family lang. As a Haskell developer, I'd be more comfortable to read Haddock-generated documentation for types of symbols, unfortunately it doesn't have too many good quality libraries in the ML field yet.