I would personally have zero problems with this arrangement. They can dig their own grave independently, as far as I am concerned. This would only lead to the smart people continuing to see good doctors (who can make concierge-level money), and the rest being happy with midlevel care. May the best (wo)man win. (One could wonder why don't those docs just open their own urgent care business.) The midlevels also wouldn't get to do a lifetime "residency" for good money, where they steal all our knowledge and tricks, until they feel comfortable to set out on their own.
What I have a problem with is the coming anesthesia status quo, which considers supervising non-compliant CRNAs as the normal model, which considers anesthesiologists some kind of CRNA consultants who do the paperwork and put out the fires while the CRNA plays games on the doc's license. Not only that, but this kind of setting leads sooner or later to loss of manual skills by the docs, making them truly dependent on CRNAs. One can see that in academia on a daily basis. On top of this, one is just a hired gun, who works one's butt off for the corporate overlords while taking the increased malpractice risks (compared to when working solo), with no real chances of independence/true partnership.
Recently I admitted a patient to the ICU and, being an anesthesiologist, I reflexively told the midlevel how to dose the dilaudid prn (it was a sick patient I did not want to end up sicker). It prompted a knee-jerk "I don't need to be told how to do this" which I did not react to, then 5 minutes later in the conversation, after I explained a bunch of other things about the patient, I hear "so what was the dosing you suggested?". And the ICU is way better than the OR when about midlevel compliance with physician requests; also, there is much more true supervision (for now).