It's true that a certain number of ER physicians can manage an airway (which means they can most of the times intubate if the patient is about to die), but as we all know, managing an airway under anesthesia is not about being able to perform a rescue intubation after you lose the airway. When we (anesthesia trained professionals) administer anesthesia of any kind our airway management starts the moment we start our anesthetic and continues through out the procedure, we have an intimate relationship with the patient's airway, we constantly adjust our level of anesthesia and our level of airway support according to the depth of anesthetic we need and according to a number of parameters that we monitor continuously: breathing pattern, SPO2, HR, BP, signs of anesthetic depth, intensity of surgical stimulus...
We don't only manage the airway continuously but we also know how to monitor and correct the hemodynamic effects of anesthetics as well as how to provide the appropriate resuscitation required.
So, I find it laughable when an ER guy claims that he/she can administer GA (calling it procedural sedation) as safely as we do
It is very difficult to explain to an outsider the real meaning of managing an airway under anesthesia and that is why it is very difficult to make these guys understand that it is an art that requires years of training and a different set of skills than simply being able to intubate if needed.
The only reasonable way for an outsider to understand what airway management under anesthesia means is for them to spend some time in the OR observing the delivery of anesthesia (not only visiting to learn how to intubate as most ER residents do).