Actually, I agree. That said, I don't believe it is possible to "automate product management" via any tool.
Part of the point of the article was to point out exactly what you did - that the content returned is somewhat vanilla. The hype is definitely greater than the actual utility. It's the same as when I interviewed ChatGPT for my podcast - the answers were fine but there were zero surprises.
(BTW , I've asked ChatGPT to give me ideas for things to prioritise based on a high-level description and pasted in company details from a website and the answers were all equally vanilla)