Because LLMs are not real intelligence, using them as a basis for websearch is likely to lead to various bad results.
The article presumes that searching means "Google search", but for meit is just the opposite: I can't access Google search at all. For me,bizarre or inconvenient things that Google does to its search engineare things I won't notice.
So let's not forget that people can use other search engines if theyget burned by Google's.