I was writing a reply to this, but it got long enough that I decided to make it a standalone blog post.
http://softwaresimply.blogspot.com/2016/12/on-haskell-docume...
http://softwaresimply.blogspot.com/2016/12/on-haskell-docume...
I think it's just that the gap to get proficient with Haskell for an imperative programmer is a hurdle they are blind to (I was blind myself!), and they assume a few simple tutorials will bootstrap them into the language like it did the other handful they learned.
This is clearly an education problem, but I guess we still have a ways to go to get acceptance.
Yeah, my intent wasn't to suggest that all non-haskell docs suck. But to show how other languages are much more howto/tutorial oriented, which I didn't appreciate as much before I had to look at ACE recently.