OK, so I was curious, so I dug around a bit and searched a few places. I actually couldn't find many, and I didn't spend much time on this, but it seems to vary significantly program-to-program and many pay them about the same. I wonder if this is directly related to PA salary. PAs don't require a residency, so training them would probably require paying them slightly below what they would get out in practice.
ArrowHead Regional Medical Center - Colton, CA - EM PA and EM PGY-1s get paid the same ($55k)
St. Luke's Hospital - Bethlehem, PA - EM PA gets $59k and EM PGY-1 gets $58k
Johns Hopkins Bayview Hospital - Baltimore, MD - EM PA gets $48k and EM PGY-1 gets $55k
Mayo Clinic Minnesota - Rochester, MN - EM PA gets $60k and EM PGY-1 get $57.6k
NYU Langone Health Advanced Practice Provider Fellowship in Emergency Medicine - NY - salary not easily found, vague reference to "competitive" salary for the PAs
University of Iowa - Iowa City - EM PA and EM PGY-1s get paid the same ($57.8k)... although the FM PA residents get paid $70k
University of New Mexico School of Medicine - Alberquerque, NM - EM PA gets $57k and EM PGY-1 gets $54k
UCSF Fresno - EM PA gets $60k/yr and EM PGY-1s get $59k
I honestly don't care if they get paid more. We should also get paid more sure, but I think that's a separate argument. What I do care about is if they get paid more and they get more access to training (e.g. priority for procedures, etc.). They shouldn't be getting trained at the expense of medical resident training.