(Shrug) That sounds like their problem, if they reflexively believe everything Google's AI tells them. No one I respect, care for, or work with would believe such a thing without additional justification.

Anyone who does accept Google's AI output blindly will soon find that their mistaken opinion of CamperBob2 is the least of their problems. There is a reason Google goes (well) out of their way to warn people that the results may be wrong. That should be sufficient warning for reasonable people of good faith.

Are you really that ignorant of the past? There are so many cases of people suffering from wrong accusations. They get death threats. People harass them on the street. Throw stones into their windows. Beat up their kids. Trash their car. Deny them jobs, or leases, kick them out of their apartment.

You have no idea what it can mean to end up in such a situation.

I don't know about that. Imagine I want to sort people into employable and unemployable based on AI summaries. After filtering the employable pile is large enough. You being in the unemployeable pile and me accepting it blindly, is not my problem. If there is any at all.

The ones who were defamed are companies, and the ones who don’t check the AI generated response are their potential customers which won’t buy from them.

It is obvious that the defamed companies are the ones having a problem, not the ignorant viewers.

Why should those companies not hold Google liable for that outcome?