I live in the US in one of the largest metro areas. I've had to wait nearly a year to see a specialist in the past, and that was with "good" PPO insurance (see my comment history for trying to find a dermatologist for what I thought was potentially skin cancer). Its really not that uncommon to have long waits. I've had insurance deny prior authorizations over and over delaying care many months despite actually meeting their own documented criteria for approving the surgery. My kids have had to wait months to get an important, medically necessary surgery
multiple times, because the decent in-network providers are massively booked out.
Comparing getting imaging work done to actually seeing a specialist is comparing apples to oranges. They're both healthcare related things but are massively different.
There's tons of imaging clinics staffed by people who only needed an associates degree from a community college, radiologists work remotely all over the place spending little time on each patient and writing a report. Overall its really cheap and easy to build and staff an imaging location.
Seeing a specialist requires actually going to the doctor in person, that doctor had to spend many many many more years and limited spots for an education, and probably only sees patients in clinic a few days of the week. You'll have a whole staff of nurses & PAs (who quite probably had more education than the rad tech) and office staff to support the small handful of specialists.
As a personal example, I had an issue with my knee, locking up from time to time bending with weight on it. I looked up kinesologists in my area covered under my insurance. Dozens within a short drive, awesome. Calling up, "sorry, we're not taking new patients", "we can see you in four months", etc. A few months go by, I finally get in to see the doctor. He has me do some motions, asks me a lot of questions, takes a quick x-ray in the clinic, recommends I go get an MRI and come back. I am able to find an MRI clinic that's covered and can get the imaging done that same day. However, its several more weeks until I can see the doctor again to actually review the radiologists notes. I finally go back, the doctor recommends surgery, a prior authorization gets filed. We wait. We wait. Denial, no MRI, imaging required to determine medical necessity. Huh, they paid the bill, didn't they wonder what the MRI said? Resubmit. We wait. Denial, MRI was inconclusive (it wasn't). Resubmit. We wait. Denial, physical therapy is recommended instead (except the thing they call out as a reason to have surgery is verbatim what the radiologist notes say). Resubmit. We wait. Denial, same response. Its now been almost a year of intense joint pain every time I crouch down, walking is starting to be difficult. I'm in a brace and crutches and the pain is getting worse. I finally just wait at the clinic all day, we spend hours and hours on the phone with the insurance company to try and get an approval over the phone directly. I finally get approval, and manage to get in for surgery several weeks later. I have the surgery in the morning, and I'm back to walking without any pain and without crutches or the brace by lunch.
And in the end, after the surgery, the insurance company complains they shouldn't have covered the procedure because supposedly I didn't have an MRI of that knee. Idiots.
This is just one of several shitty stories I have of dealing with health insurance companies. Multiple over the years.
And that's on the insurance side, not even the care side of things! One time, while waiting multiple hours in an ER complaining about becoming massively lightheaded and weak and barely able to sit, I finally passed out and fell on the floor out of my seat. The shock of hitting the floor woke me up a bit, and the first thing I heard was "sir, you're not allowed to lay on the floor, stand up." Uh, I would if I could!
All in all it took over a year of joint pain before I managed to get surgery to fix my knee, all because the insurance company was rationing care. A year I won't have playing with my toddler at the time (I couldn't easily crouch down to play and expect to stand back up easily). Arguments of "bUt RaTioNinG!" ring extremely hollow to my ears. We already have rationing in America, you just haven't experienced it yet.