I've noticed this a lot lately. There are words on the page that look like a description of the product and a review, but once you really read them you see that they could be generated by a bot and they don't actually review the product, just describe the basic properties of it. Then they provide that button.

True, although Google has been knowing about this issue and has released guidelines alongside a "Product Review" algorithm update three or four months ago.

Let's see if things improve in the near future.

And many are on first page of Google search, the “best search engine” lol. We get what we pay for it. Where is pay for web search startups?

https://neeva.com/ is trying, but I doubt they're succeeding :-/