They google crap all the time. They're as unaware of things as we are.
The tests they have access to are much better than anything we can get our hands on though.
An expert refreshing their knowledge on Google is not the same as a layman learning it for the first time. At all.
This has happened to me 3-4 times, hasn't sent me wrong yet. Meanwhile I've had doctors misdiagnose me or my wife a bunch of times in my life. Doctors may have more knowledge but they barely listen, and often don't keep up with the latest stuff.
Maybe I'm a low-risk guy but I would never follow a medical solution spit out by an LLC. First, I might be explaining myself badly, hiding important factors that a human person would spot immediately. Then, yeah, the hallucinations issue, and if I have to double check everything anyway, well, just trust a (good) professional.