I am Canadian as both my parents were born in BC and the majority of my extending family still reside there. I have never heard any of my cousins complain about the medical care they receive in Canada, and in fact, they seem very happy with "socialized medicine."
Regarding wait times, shortages of doctors, etc we have the same issues in the U.S. Just yesterday I read an article in the Washington Post about the shortage of doctors and especially nurses, many who quit following COVID. We have a huge shortage of medical care providers in the U.S, not only because many in the medical field are leaving their jobs, but also because there are not enough professors to teach medicine, including nursing. Nurses have an extraordinarily demanding job of which many do not appreciate. I say this from experience as I lived with one for 10 years.
In any event, in my opinion, I think/believe that the more complex one's problem is, the longer the wait time may be.