This article only proves that when doing it wrong, CoffeeScript causes problems.
No parenthesis make nested calls unreadable? Simple add parenthesis for the inner calls. Like in any other language with optional parenthesis (Ruby) too.
Too long statements are unreadable? Don't write them. Maintaining an 80 or 100 character line limit is good coding practice anyways.
That's kind of the point of the article: If it's easy to get it wrong in CoffeeScript, i.e. CoffeeScript has its own bad parts, then you're better off just learning to deal with the bad parts in JavaScript directly.
No parenthesis make nested calls unreadable? Simple add parenthesis for the inner calls. Like in any other language with optional parenthesis (Ruby) too.
Too long statements are unreadable? Don't write them. Maintaining an 80 or 100 character line limit is good coding practice anyways.