Yeah it seems harmless in isolation, but I'm pretty sure that lacking a norm against it it is one of the ways you end up with Reddit. And because HN doesn't have an actual anti-humour rule, in the best case it lets the funnier and more creative stuff through while punishing the obvious one-liners and boilerplate jokes that everyone would be clamouring to make first on a Reddit thread. (I don't want to be rude, but the thing where someone writes stereotypical AI speak in an ironic context has been done a billion times and doesn't need to be done again, unless it comes with an interesting twist or unusually sharp execution.)