It's not about impressiveness - surely, it's impressive. However, the article is more or less critiquing the discourse surrounding the model - namely, that there is a strange misconception floating around that it's somehow a general purpose AI that can understand and think about the world similar to a human. Which, of course, it cannot.

If the claims about GPT-3 were accurate, there'd be a lot less of a flare-up about it. Don't claim your software does what it can't.