Theres definitely enough MDs out there, but your group likely doesn't want to pay market rate. Again, a cost consideration thing, not a leadership thing.
I would argue that physician leadership is about having an all-MD/DO practice because every patient in that scenario deserves the best care, which is direct physician-provided care.
I do locums at a place that does MD only and also at one that does CRNA supervision under a 1:4 ratio because they cant meet the TERFA guidelines. The CRNA place sees the need for anesthesiologists being essential much more than the all-MD practice.
If youre worried about being less expendable, then you've already lost that battle. You shouldnt have to convince someone of your expertise and need. Do CT surgeons do this? Do they have to convince admins that their PAs are good enough and they dont need those CT surgeons? How about urologists? How about any other major OR specialty?
Its good that you acknowledge you made an assumption, one that isn't correct.
If you are staying in the room from spinal to delivery with a CRNA also in the room, then thats a massive waste of resources. Closing after delivery is like 15-20 minutes. if there is hemorrhage or complications, then you gotta come back into the room since thats the direction requirements to be present at all critical portions of the case. And if you are in the room during the spinal to baby time, then you cant start the other case, in which case a second CRNA is also a waste of resources. Those wasted resources could have gone to another MD on your OB service, but instead you have a CRNA there. Solid physician leadership.