You're saying nurses don't know that xrays are used to diagnose chronic coughing?
You over generalize because you don't understand. What is chronic coughing? When is a CXR appropriate in chronic coughing? What steps should be taken prior to ordering a CXR? What are the risk features that you make a CXR an earlier or later study? No, I don't think nurses know the answer to these questions. What you're suggesting would be a system where, "You have a cough, you get an xray," is the standard, which is incredibly wasteful and damaging.
As you jokingly suggest, yes, 100% of my dad's cancer was handled by an oncologist. 100% of my mom's cortisone shots are done by a guy who only does orthopedic stuff. It would be awesome if a family doctor would give those cortisone shots, but that's not the situation. The doctors around here don't even treat things like depression. I had to get a referral to a psychiatrist just to get fluoxetine. I've been taking that for years and it's still 100% handled by a psychiatrist. It's absurdly expensive, but that's the system. I'm left wondering if family doctors actually do anything.
It's unfortunate then, that your extremely limited anecdotal evidence has poorly colored your view of "how it really works," because that isn't the rule, it's the exception. General practitioners around here have no issue managing depression (in the vast majority of cases, unless specific therapies are needed as a result of resistant disease, ie ECT), nor diabetes, nor doing knee/shoulder/SI/finger/wrist injections. Certainly some doctors won't, all live within their personal comfort zone, but many do.
btw I'm in Spokane. Move to Spokane if you are qualified to prescribe mundane things and give cortisone injections. The metro area has about half a million people. Housing is relatively cheap because population is spread out. The climate is pretty nice. Never too hot, never too cold.
No thanks, I live in a similar region on the east coast that I like just fine.