It has the ring of a know it all type of pedantic comment. I can safely assume that butterflys are deformed when they are pinned, I dont have to have a big expose revealing it as some hidden secret. Hackernews has the habbit of making disability level OCD seem like some grand hidden nugget that will make everyone think you are nerding better than everyone else.
Come on. This was an obvious reference to the article that was hot on HN recently.
Also while you "can safely assume that butterflys are deformed when they are pinned", you can also safely assume vast majority of the world doesn't know that, and you can also assume many people might want to reconsider using a dead butterfly as a symbol once they learn the image doesn't show what they thought it shows.
AKA regular, friendly, and completely warranted pedantry.
