ChatGPT

To me the main thing is, this is about utility of tools for acquiring general domain knowledge in a one-off event. The effects on overall intelligence, which is a separate thing from knowledge or ability to give effective advice on a topic, are a totally different scope.

What it's actually testing doesn't seem like it's finding anything surprising, because the information itself the subjects are getting from ChatGPT is likely lower quality. So it could just be that the people reading blogposts or wikihow articles about starting a garden learned more and/or more accurate things about it, rather than, research using AI negatively affects the way you think, something that would make more sense to test over a longer period of time, and with a greater variety of topics and tasks.