Because meta is murder[1]. Nobody comes to read HN about the finer points of posting on HN, they come to read the interesting stuff on the front page (and IMO, someone hacking vim to do invoices is interesting) and the further interestingness in the comments.
This entire comment chain is both not interesting and not contributing anything to anyone. It's a complaint. It's a long form "I didn't like this" that could have been avoided by not clicking on the link. Okay, they didn't like it. So?
And on top of that, it comes across as a rather dickish snipe at the community.
Yet meta is necessary, no? That's how the community improves in a feedback loop to increase its value? StackOverflow even created an entire Meta site for that reason, though they wisely segregated it from the main location. Such a thing does not exist for HN so I guess the meta pollutes the main threads. Anyway, I'll stop polluting now.
This entire comment chain is both not interesting and not contributing anything to anyone. It's a complaint. It's a long form "I didn't like this" that could have been avoided by not clicking on the link. Okay, they didn't like it. So?
And on top of that, it comes across as a rather dickish snipe at the community.
Both of these things deserves downvotes.
[1]: https://blog.codinghorror.com/meta-is-murder/