Learning Haskell is like learning Latin, sure you'll gain deeper insights into other languages and language itself, but you aren't going to be able to do much by just speaking Latin.
I'm not who you're responding to, but you've responded to my posts on this topic. I think, what they're trying to illustrate, is that Haskell is still an incredibly niche language. Sure, yes, there are jobs at a handful of big names, and then a handful of not big names and companies that found their success using it. But if you were trying to maximize your employability or open up new doorways in your career, you definitely wouldn't pick Haskell as the language to do that with.
Separating "I like and use Haskell" from "Learning Haskell will amplify your career and employability" is, I think, what they're going for, and I would generally agree with. "The exception that proves the rule" is a thing, after all.
Just want to let you know that I didn't downvote you, and was genuinely interested in what you use Haskell for, so thanks for the reply. Have you had trouble hiring developers that know Haskell?
Saying it is very inconsiderate of the efforts of everyone writing real world Haskell software.
Facebook uses Haskell, Github uses Haskell, etc... the metaphor doesn't hold and means this is just FUD.
On top of that, you're actually talking to a working professional Haskell programmer whose company depends on it.