Based on my own usage patterns I don't think this is too implausible. When I do use an LLM chatbot for a "search", I'm almost always gathering initial information to use in one or more traditional search queries to find authoritative sources.

It does kind of contradict my own assumption that most people just take what the chatbot says as gospel and don't look any deeper, but I also generally think it's a bad idea to assume most people are stupid. So maybe there's a bit of a contradiction there.