Here is where you are wrong. Who in the hospital is the driving force behind taking Propofol out of the ED? Anesthesia. By doing that, you are dictating how I practice.
FWIW, I'm not really comfortable with any specialty imposing rigid limits on any other. There is a point though within an institution when borderline or crazy stuff done by one group has the potential to impact another.
You may be board certified by your own society, and your literature may support what you're doing, but you're credentialed to practice at a given institution by that institution. Beyond credentialing, other hospital committees may have substantial influence and power to regulate how certain things are done there. Those committees are made up of people, people who may include anesthesiologists, people whose purpose (among other things) is to attempt to minimize both the risk of harm to patients and legal risk to the hospital.
I've had such committee duty inflicted on me, and when a proposal or adverse event report reaches me for my opinion the only thing I can do is make judgments and recommendations based on my experience in my own field. I can't imagine and apply another specialty's standard of care.
I suspect that inducing general anesthesia in full-stomach patients for brief painful procedures (as is often done in the ER) probably has very low risk. Obviously our ICUs are not full of ARDS patients who aspirated during their propofol-facilitated shoulder reductions in the ER. I suspect that the fact that you generally aren't mask ventilating them or instrumenting their airways contributes to the low incidence of aspiration. But I don't know.
What I do know is that I have seen full-stomach patients regurgitate large volumes into their mouths
immediately after induction in the OR, before any airway instrumentation or procedure was done ... and I do know that my own society has NPO guidelines and if I step outside those guidelines, I do so at my own peril (to say nothing of the risk assumed by the patient).
And so, regardless of what your literature shows and what anecdotal information I hear from the ER, I can't get behind the kind of heavy handed sedation/GA you do in full-stomach patients. In time, perhaps your continued event-free ER general anesthetics will produce data and change my mind, but for now all I can think is "that's a really bad idea" ...
And again, when the question of who can sedate who and how and where comes before the hospital committee I'm a member of, all I can say to the rest of the committee is "that's a really bad idea" ...
All that said, imposing a propofol ban upon an ER is dumb. It solves nothing and unfortunately corners you into using an inferior drug for something you're going to do anyway.