Very creative use of the technology. I wonder when GPT3 will evolve to handle more languages, and what if any steps they take to reduce cultural bias? If I was in Japan these recommendations would certainly be less useful. :)
Given this blog post I have no idea if it even works well for English. Sure, the demo video contains sensible recommendations but what gives? Most of those I've seen seem to be included in the training data shown in the image below. If you have the term "AI" in your blog's blurb readers might expect the author to actually perform an evaluation of stuff they write ads about.