If a tool that is supposed to be helping you find information gives you wrong information (eg sends you to a link that COVID vaccines have 5G chips) then I'd say that is a failure of the tool.
I tend to agree. But if I want to find wrong information and the tool doesn’t give me what I want, isn’t that also a failure of the tool? At least in the “product does not meet user expectations” sense of failure?
I very much agree. But from a UX point of view, that's a failure. This is a case where the user's desire (find my evidence of something I believe) is not aligned with what IMO should be a search engine's mission (surface the most relevant and accurate information for a query).