I don’t feel like off-the-cuff summaries by AI can replace web sites and detailed articles written by knowledgeable humans
No. But that’s not what a typical search result returns.
There’s also no guarantee the “detailed articles” you get back are well-informed or correct. Lots of top search results are just ad copy or similar propaganda. YouTube, in particular, is rife with long winded bullshitters.
What you’re looking for is a well-edited trustworthy encyclopedia, not a search engine.
Sure. It depends on the topic. It also depends how good you are at searching. Personally, I don’t have any difficulty finding quality websites via Google or DuckDuckGo. Sometimes it requires refining the search terms, and many people don’t know how to do that properly. For certain topics, I might not. However, i stand by my assertion that some statistically generated text which you can trust at all is less useful than a good article on a topic. Is Wikipedia useful also? Yes, it is.