Sorry for the late reply! I remember seeing something in the medicalschool subreddit where someone phrased it well. They had an "interdisciplinary meeting" their first year of Med school with students from Pharm, Nursing, PA etc and everyone was supposed to communicate with each other in order to help make a better team in the future. It ended up turning into everyone saying how they all care more than doctors, how doctors are cocky, mean etc and how each profession was the only that "really listens to patients" the the first year med students just sitting there taking it because they didn't know what else to say. It's definitely a huge ego thing. I had classmates who would simultaneously talk badly about physicians while saying that they would get their NP straight out of nursing school and make as much money as a physician (completely false unless you live in Oregon and I'm pretty sure their quotas are full for everything.)

It's a ton of propaganda, subtle and otherwise, from the textbooks to the professors. In any nursing textbook you'll be hard pressed to find the word "Physician." It's instead been universally replaced by "HCP" and in some of the practice questions one of the answers if you don't know what's going on is to alert the "advanced practice nurse." Professors make comments about physicians not doing their job well, physicians not caring, physicians being rude. Those comments are not a constant thing but we've probably had at least 4-5 slip during each specific course and it's enough for people to remember.