In practice they're always (?!) about the userbase.
Everything's got exceptions but it's usually a punch by proxy. This would be really obvious if it was anything else.
If someone started making fun of say basketball, keeping it not about the people who play and are fans would be quite a precipice to navigate.
You could certainly complain about the technicals of the rules but you're no longer in the world of jokes.
Given that, Haskell, unless you're a mathematician, is still one of the least accessible language outside of purely academic, esoteric or intentionally obfuscated ones.