In the same way you can tell if a search result is "good", you can usually tell if what ChatGPT is telling you something truthful.

And you face the same problem when looking for something in a domain you are not an expert in - no way to tell if a web page is truthful and no way to tell if ChatGPT is right. ChatGPT just lets you make more mistakes more efficiently.

But for those cases where you kind of know the answer, ChatGPT is usually better than search.