I don't really know what the author's real angle is here, does he think LLMs aren't inevitable because they will be supplanted by something better? That's certainly plausible. But if he thinks they might get banned or pushed to the margins, then he's definitely in loony town. When new technology has a lot of people who think it's useful, it doesn't get rolled back just because some people don't like it. To get rid of that technology the only way forward is to replace it with something that is at least as good, ideally better.
Is my position "inevitablism"? Does the author slapping that word on me mean that he has won the debate because he framed the conversation? I don't care about the debate, I'm just saying how it will be, based on how it always has been. Winning the debate but turning out to be wrong anyway, funny.