I don't think a reference website should include any sort of feature that can hallucinate incorrect documentation for you on demand.
It's bad enough that they have to include a disclaimer[1] on their upsell page, which states that the "AI Help" may occassionally return incorrect results.
I think most of the hate for current AI tools comes from the fact that people expect the computer from Star Trek which always provides perfect answers.
Edit: So yes, it needs to be made super obvious to users that it might give you wrong answers.
Either it's good at explaining and is right, or is bad at explaining and is wrong.
Applying the logic of it being "right most of the time" seems really bad for a tool applied to a reference documentation website.
I'm not saying it's great yet, but there is potential for having something that can hand-wave away some details like a human would when explaining something to a beginner.