This seems to be a hard assumption the entire post, and many other similar ones, rely upon. But how do you know how people think or reason? How do you know human intelligence is not an illusion? Decades of research were unable to answer this. Now when LLMs are everywhere, suddenly everybody is an expert in human thinking with extremely strong opinions. To my vague intuition (based on understanding of how LLMs work) it's absolutely obvious they do share at least some fundamental mechanisms, regardless of vast low-level architecture/training differences. The entire discussion on whether it's real intelligence or not is based on ill-defined terms like "intelligence", so we can keep going in circles with it.
By the way, OpenAI does nothing of this, see [1]:
>artificial general intelligence (AGI)—by which we mean highly autonomous systems that outperform humans at most economically valuable work
Neither do others. So the author describes "tech industry" unknown to me.