water wets stuff by physical contact.
if we assume water is always in physical contact with itself, then it technically is wetting itself, which means water is wet.
It's a comment on Apple's research on LLM failures. Given that context I'd say it's probably not a bot, it's probably someone just pressing the word suggestion button on their phone 100 times because LLMs are basically just a more advanced version of autocomplete (obviously this is an oversimplification)