I think you definitely have a point and appreciate your post. I have two intact bitches and limited means so I was considering using the low-cost clinic for the physically healthy one to save money for a private practice spay for the physically fragile one.
But sturdy, eleven pound Chocolate has severe SA and is NEVER left completely alone. Laurel stays with her if I can't.
If I dump her carrier off at 7 AM and they've got 30 feral cats and 25 low-income folks' pets to do that day, she could die.
She doesn't need a spay that badly or that immediately. There are more important things in life than money. I would gladly give up a luxury or postpone a necessity to pay a vet who would provide the kind of service you describe.
We didn't used to have holistic veterinary care either.
Laurel: born 9/1/18, 6 lbs, with me since Veteran's Day
Chocolate (foster/adopt): born 10/4/18, 9.5 lbs, with us since Memorial Day