None of those cited criticisms is at all recent. 1975 was 35 years ago. Litigation against D.O.s ended in the 60s.
Wait times vary considerably from practice to practice. Emergency care will usually pre-empt patients coming in for routine visits, just like triage at a hospital will code someone having a myocardial infarct before someone who crushed their hand in a hydraulic press. Please, find me a citation saying 1/2 of all us docs are millionaires. Dermatologists and radiologists are near the top of the pay scale, and their average salary is quite good, when they finish the 4 years of medical school and 3 years of residency where you make less than minimum wage. These are the most competitive specialties to get into, and they in no way constitute anything close to even 10% of doctors, let alone half.
But internists, family medicine and pediatrics are at the bottom of the pay scale, making on average about 165,000 a year. Which is nothing to sneeze at, but hardly millionaire status, especially considering the fact that if you only look at the cost of medical education, not undergrad, they are finishing school with an average debt load of about $150,000.
Personally, if you are a pediatric neurosurgeon, who has completed 4 years of medical school, followed 5 years of surgery residency, and an additional 2-3 years of fellowship where you make around $50,000 annually and work about 80 hours per week, I don't a salary of upwards of $350,000 a year is out of line. Then again, ask the parents of the kid who had a life threatening brain tumor removed if they feel differently.