A little freaky when you think about what that really means. Some of the most advanced AI systems in the world are solely focused on being good at manipulating human behavior. Cool... cool cool cool............
Think about all the stuff ChatGPT and GPT-4 can do with even minimal prompting. Even when they hallucinate, the text is still ostensibly coherent and natural sounding. Now imagine a similarly powerful model, but its input is a ton of metadata about your behavior and its output is ads.
Now consider that adtech has had substantially more funding for substantially longer than research into LLMs, so ad serving models are probably way more powerful and optimized than even GPT-4.
It's freaky to think about indeed.