Is the author an ER Doc or NP?
Probably nurse. They are the ones on the front lines, and many tend to really, really resent "seekers." What I see as a volunteer a few hours a week is that the concept of addiction as a disease hasn't really taken hold (except for lip service). Nurses often feel that addicts are pseudo-patients who are taking the place of "real" patients, and physicians are all over the map. Some are too easy to hit up for prescriptions, others get into a pissing contest with the addict and don't want to be "outsmarted" or "made a fool of," others provide compassionate care consistent with best practices.
It's so hard with addiction not to view it in some sense as a moral failing (despite all the science to the contrary).
Also, the ER personnel are right: addicts DO increase wait time and reduce quality of service for other patients. And they can be very expensive, costs which get passed on to other payers. For example, malingerer addict comes in with "the worst headache of my life." This symptom, apparently, can be indicative of a very serious condition and requires major workups, costing thousands of dollars and tying up scarce equipment and resources. Same for shortness of breath, seizures, etc.