Oh yeah this is very much the case. Every time I ask ChatGPT something simple (thinking it'd be a perfect fit for an LLM, not for a google search) and it starts searching, I already know the "answer" is going to be garbage.
I have in my prompt for it to always use search, no matter what, and I get pretty decent results. Of course, I also question most of its answers, forcing it to prove to me that its answer is correct.
Just takes some prompt tweaking, redos, and followups.
It's like having a really smart human skim the first page of Google and give me its take, and then I can ask it to do more searches to corroborate what it said.
That is interesting. I have often been amazed at how good it is at picking up when to search vs use its weights. My biggest problem with ChatGPT is the horrendous glitchyness.