In the modern era is a doctor nothing more than a gatekeeper for medication?

Outside of screenings and performing various tests, none of the doctors I have been to in the past 4 years seem to possess up-to-date medical knowledge that far beyond what they were taught in medical school. With the internet, it's easy to google search a symptom and think every ache and pain is a sign of stage four cancer but looking beyond that, I have access to thousands of medical articles/studies that I can read at my own pace as many times as I want. These are articles that I'd bet my doctor hasn't felt the need to or has had the time to read his/her self.

Going to the doctor, I feel fairly confidence, I can say well based on x, y, and z I feel like I could be experiencing a, b, or c. It's good to be able to steer the course of your medical treatment, but having to educate the doctor on these things doesn't make me feel very confidence in their ability to diagnose and just makes me look at them as a tool to get tested for suspected illness or to receive a prescription for a certain medication.

It also doesn't help when they refuse to acknowledge what you have suspected or just flat out denies it despite the fact of themselves having no good explanation for why you have the symptoms you do, believing none of them could possibly be related and simply handing you pills to treat the symptom you talked about the most during your visit.