How is that in any way, shape, or form comparable to Brainfuck?!
It's possible that Haskell is like COBOL in that it's used in industry but not at all by the community. But I'm not sure how I would characterize it, then. Does industry use count as "practical"? I honestly don't know. Anyway, examples would be nice.
Haskell indeed has less penetration than something more popular like JavaScript.
But the Haskell language is not easy to use if you're a script-kiddy. Most "easy" languages can have some form of copy-paste reuse, and a lot of "the community", it would seem, just append together useful snippets to get their programs done (and whether they have a deep understanding or not is not needed).
This isn't true for Haskell. It's actually quite hard to just "copy/paste" Haskell without out knowing the underlying concepts. I wager that the reason there seems to be less.of a community in Haskell is due to this property.