People who make fun of LLMs most often do get LLMs and try to point out how they tend to spew out factually incorrect information, which is a good thing since many many people out there do not, in fact, "get" LLMs (most are not even acquainted with the acronym, referring to the catch-all term "AI" instead) and there is no better way to make a precaution about the inaccuracy of output produced by LLMs –however realistic it might sound– than to point it out with examples with ridiculously wrong answers to simple questions.

Edit: minor rewording to clarify