If we were to discuss everything in this article, starting with dynamic vs static typing, we'd still be here 3 months from now :). Which is why it is opinionated.
The problem with that section isn't so much that it is opinionated, it's that you can't really have a sensible discussion about typing on just a dynamic vs. static axis.
At the very least you should address the implications of strong vs. weak typing, and you should probably address the strength and nature of the type systems, also. After all, saying that both C and Haskell are statically largely misses the point.
Yeah, I was just going to edit my comment to say "well, at least the author states it is 100% Opinionated View" :) But you could skip that part and have more arguments, although without it you couldn't easily rule out some languages (e.g. LISP). I have to admit I'm also biased as a Clojure fan, and I find Scala too verbose and less functional than Clojure. Oh and btw, I read it all :P
At the very least you should address the implications of strong vs. weak typing, and you should probably address the strength and nature of the type systems, also. After all, saying that both C and Haskell are statically largely misses the point.