I think LLMs are good answer engines, but terrible search engines. For example, if I just want the answer to "How do I foo this bar with a thingamajig", or "what kind of foo exists for bar", LLMs are 100% better because they'll give me an answer without trying to sell me their thing or pump me with ads. It also lets me go more in depth than the very surface level seo spam sites that appear when you do a search like this. On the other hand, search engines should be more like "<thing>s released 1908" or "<topic> and give you results talking about what you searched. If I search for C algorithm design, I don't want to learn what C is, what an algorithm is, and various other seo garbage. I want to learn about C algorithms and their design. If I search for influential books from 1908, I don't want "top 10 classics from the 1900s" or "hidden gems of 1908".
Currently, search engines are pretty bad at the second one because people try to use them as the first one
