Well, I'm not a poetry buff either, but my superficial understanding is that a haiku is characterized by humour and ambiguity, so that it would leave you contemplating multiple possible senses, perhaps each one funnier or more intriguing than the next. And perhaps there would be some tension in understanding which meaning would be most intended, as it were. "...expressing much and suggesting more in the fewest possible words." (Britannica) I think a lot of contemporary haiku express little and suggest nothing.
Nothing wrong with the page or the writing there, I'm only saying that as the word is increasingly used in a more superficial way as I think is the case here, the historical form of poetry known as haiku has no name of its own any more, which becomes a problem especially in the age of search engines where present usage is all that matters.
(Disclaimer: not a poetry buff, just reading other comments)