Fooling people with chatbots having clever language constructing has been done for a long, long time, see the Eliza effect[1]. Douglas Hofstadter gave a good demonstration of GPT-3 limitations[2]. GPT-3 is no doubt "better at what it is" than earlier language models. But that doesn't mean it's better at everything humans do with language (tell sense from nonsense, reasonable metacomments, etc).