Back in the days before cell phones, my mom would wind up being on call for overnight labor & delivery. The final straw (certainly not the first) was that they got a call in the middle of the night that a woman came in in labor, and she had to drive in to work (a half hour drive). This woke up my dad, who also happened to be a light sleeper and worked a day shift.

20 minutes later (while my mom was well on her way into work) the phone rang again- it was a false alarm, she didn't need to come in anymore. Naturally, it was my (not so happy) dad who answered.

By the time she got in, they didn't have anything for her, so sent her back home.

At the time, there wasn't quite such a crunch in nursing, so the pay part wasn't accurate yet, but everything else you listed (substitute COVID for %50+ of patients) was already true 30 years ago.