What's worse is it belies an ugly aspect of human nature (particularly pervasive in the US IME) that people absolutely do not give a fuck about anyone else when it comes down to it. As long as someone is fortunate enough to have decent health insurance through their job, people who don't are lazy.
The big picture here is that the wealthy want people dependent on jobs and to be in debt (eg student debt) because it makes them compliant.
So I'm not surprised nurses are leaving. Insurance companies make providing healthcare an absolutely miserable business and deliberately killing people ("prior authorizations", "pre-existing conditions", etc) should not be the basis for commercial enterprise. Denying someone life-saving or life-changing care should not be a profit motive.
What's worse is that a lot of the burnout is effectively caused by people who are profoundly selfish and are voluntarily choosing to get sick and die of what is now a highly preventible disease.
It's a hard situation because people depend on nurses so collectively they're torn. Teachers OTOH aren't life-critical (but still obviously important) so I'd actually like to see them make a mass exodus over all the right-wing censorship they're facing in most states.