Sure Haskell is good for more than just concurrent programming, but the article was leaning on concurrency and parallelism in its comparison with Node.js
And I should also point out that said "blub" languages can also implement those features which they lack that Haskell includes by design. Some have better features than Haskell, IMO (ie: Qi/Shen sequent types and the ability to turn the type system off when you don't need it).
Again, Haskell is a good language. I just don't see it as a "cure." There are many other options.
How can the "blub" languages implement Haskell's type-classes as libraries? Or generalized type inference? What about Haskell's higher-kinded polymorphism? And pattern matching?
Lisp can do some of these, but it is not exactly a "blub" language. Is there a nice comparison of Qi and Haskell? Once you implement such a large, non-trivial system (such as an advanced type system), I really doubt using Lisp macros rather than implementing a compiler is easier. Macros that do such non-trivial things also do not compose well, so I doubt Lisp is beneficial for this purpose.
And I should also point out that said "blub" languages can also implement those features which they lack that Haskell includes by design. Some have better features than Haskell, IMO (ie: Qi/Shen sequent types and the ability to turn the type system off when you don't need it).
Again, Haskell is a good language. I just don't see it as a "cure." There are many other options.