Weak arguments in the article with badly chosen examples.

If one wanted to criticize OCaml syntax, the need for .mli-files (with different syntax for function signatures) and the rather clunky module/signature syntax would be better candidates.

I actually rather like the mli-files. It's a nice file to read, with the documentation and externally available symbols only. However, the fact that the syntax is so different is a bit annoying.

Sometimes I wrote (haven't written OCaml for some time now..) functions like:

    let foo: int -> int = fun x ->
      ..

    val foo: int -> int

I actully like the mli files. Its a separate place to describe the PUBLIC API, and a good place for documentarion. Now you dont clutter your code with lots of long comments and docstrings.