Nothing's perfect, but the plan differences seem stark. For example, my wife had a crappy marketplace plan and I had a plan through my employer. For her, an MRI was denied, denied, then finally approved with many calls. For me, it was approved immediately. For her, pre-auth to a specialist was denied until her doctor went and tried a different referral strategy. For me...well, I haven't been denied yet. It goes on - same city, same hospital, some of the same referrals, etc.
I've come to think the price discrimination really does mean we have class-based care which seems to allow for the sensationalism. Combine a dire scenario with a working or indigent class American, and they don't have to exaggerate much at all.
It does make a big difference exactly where you are in the US, however. Some places have a glut of healthcare providers and other places don't.
Where in the US did you have to wait months? There seems to be an MRI/imaging location in every other shopping center in the US right now. I've never had a problem getting a same day MRI when needed. Perhaps you were waiting for the 'free' one your insurance would accept?
Now try to schedule a colonoscopy. It'll probably take two or three months.