It’s something like 90% of Americans avoid going to the doctor at all if they can help it, 5 months is a lot less time then never. Also demand drives supply, more patients means more need for clinics, imaging centers, hospitals, doctors, nurses, universities etc. universal healthcare could be a financial boon

Healthcare is being run as a business with "just in time" supply and demand, overworking the workers who are willing to work overtime to save patients, cutting fat and trimming operations until it is a lean machine that when you take anything away would sputter. That is the ideal neoliberal image of healthcare. We saw how that worked out with Covid. Some areas should be inefficient and have "fat".

And of course the burocracy mandated by private insurance.

They are booked out, because the insurance makes them go thru mutliple loops, wasting an insane amount of time. My dentist had to make 4 separate appointments for a root canal/crown, because the insurance required proving each sub-procedure, with x-ray for each one of them, that otherwise wouldn't be required. and I could've had it done in two.

Education isn't the bottleneck, residency is. Plenty of qualified doctors coming out of med school that don't get residency, so they have to try again next year (and compete against fresh grads).

Raising residency limits is, of course, unpopular because it means more doctors, which means less demand, so less pay to cover med school loans...and nobody wants med school to cost less. Least of all the people buying up those loans. Read: rich folk that live on investments.

I don't understand why we need a plan.

When cheif of the fire department needs more people; They hire more.

When the chief of police needs more deputies; They hire more.

When the chief of medicine needs more nurses... Wait we don't have a cheif of medicine? Hu. Werid...

You're really falling for the fascist lie of "people are getting dumber"

The rate at which new doctors are trained in the USA has historically been bottlenecked by the number of residency program slots available. Hospitals financially benefit from each resident they employ, but not as much as they do from adding other roles, instead (such as nurses). Also, it is not trivial to create a new residency program or expand an existing one (accreditation requirements, other fixed costs, etc.). This is why 25 % of USA physicians are immigrants. The Republicans have also made it more expensive to get loans for medical school, which will discourage some people from going to med school in the future, although the insufficient supply of residency slots might still end up being the bottleneck.

But even if we did not increase the supply of doctors, moving to Single Payer would still benefit us by reducing cost. I don't think Single Payer would need to be coupled to increasing the supply of physicians.

The number one cause of personal bankruptcy in the USA is healthcare. At this point, what is worse, losing everything to a massive dumpster fire, US healthcare, waiting for treatment or croaking because your health insurance sucks shit.