I didn't mention this in the other threads in tech communities that I commented on, but I think it's worth noting that he's a big fan of ChatGPT per his blog. This obviously shouldn't happen to anyone, and there's a big difference between privately using ChatGPT and unleashing an AI on the internet that you'll never have to answer for, but I think it's worth acknowledging his use of AI.
The comments on Hacker News also bring up that the blog post was likely prompted independently by the human behind the AI. Obviously we can't know for sure, but that makes the most sense from what I've seen.
I cannot stress enough that I'm not making excuses for the behavior, just pointing out that the AI is likely not as advanced as this article suggests.