The benefit of web searches, and trouble with LLMs, is you can see the site that an answer is on and judge the credibility based on that. If I see that the answer is on Reddit ELI5, then I know that there's no assurance about how accurate the answer is. If it takes me to a page for a university engineering or math department, or the blog of a dude who built a receiver, then I can be a lot more confident that the answer is correct, though it might be technically over my head.