I think the joke is good here, because the title is ridiculously ambiguous, and a technical article about how wine is made would suit HN as much as one about WINE.
But when people try hard to make a pun that isn't so good.
I look at it the other way: with the title worded and capitalized as it is, the joke is so obvious that I just can't find it funny at all. Immediate eye-roll and downvote from me when I clicked on the comments and saw that the top comment (at the time, at least) was a joke.
Heh, I just reloaded the page, and it looks like that comment wasn't even a joke after all! The commenter did not read the article, but honestly believed it was about the alcoholic beverage, and has since updated the comment to reflect that.
This is the other thing about this, too: sometimes it's hard to distinguish a joke for someone actually just making a mistake.
Sometimes titles are all-first-caps though. It is not obvious it doesn't mean the drink. If it is first-caps for first words and proper nouns, then why has
"Works" got a capital?
But when people try hard to make a pun that isn't so good.