What has happened is very simple:
Most search engines, especially Google return slop in their top results. A chatGPT search will not return slop (at this time)
And I don't like this because after it give them the link to the webpage they wanted it keeps talking to them. Giving compliments, asking if it can help in other ways. And bragging about itself.
The goal is to get the person to use the chatbot enough that they are willing to pay for it when they cut it off after a few weeks.