In any case, even contemporary LLM---as primitive as they will look like in even a few months time---are already pretty useful as assistants when eg writing software programmes. They ain't gimmicks. They are also useful as a more interactive addition to an encyclopedia. Amongst other uses.
The article also conflates AI in general with LLM. It's a common enough mistake to make these days, so I won't ding the author for that.
Summary of the article: contemporary LLMs aren't very useful for highfalutin liberal arts people (yet). (However they can already churn out the kind of essays and corporate writing that people do in practice.)