LLM's are just summarizing search results and not always well. This is like asking if academic papers are relevant when college essays exists, imo. I would much rather read the original source of the material than the summarized (potentially badly) LLM result.
Compared to Claude and Gemini, I think ChatGPT is really more thorough when it comes to web searches and providing sources. The others usually answer in a short paragraph and give me maybe one or two sources, while ChatGPT thinks for a minute and presents me a little mini report with 10-20 sources to look further into. This is honestly the reason why I stopped paying for Kagi, but I'm not sure how worse this will get when ads become commonplace in ChatGPT.
Convenience is a massive leverage here. And most people trust LLM de facto. If a tool is good enough for 85% of audience - anything else is irrelevant.
Well you could ask it to only reply with snippets from its sources.
So a slower search engine with fewer results?
Delivery food is not faster or better in a lot of places.
Delivery food is worse everywhere I've ever had it.