Mean customers, and rude coworkers? I sympathize, but this is a reality in a lot of industries. I have no reason to believe that healthcare here is worse than average.
The example stories they have shared are the type of thing I can't relate to and I've worked in software, general engineering, food service, construction, and tech support (I answered calls for 3 years).
She's been punched in the face by a patient, she's had coworkers who sabotage each other due to personal vendettas, she's had bosses go on racist tirades in meetings, and on and on and on. As I remind my wife whenever she has a particularly awful day, there's a reason why the classic NP-hard CS problem is literally named the Nurse Scheduling Problem[1]. And yes, she's considering a career change.
Grouping these people as conspiratorial is unfair and seems politically motivated. While you definitely have some overlap with conspiratorial people, people have a right to be skeptical of medical care, which is often incorrect and potentially life threatening. Being able to explain things concisely and with evidence is a core skill for a nurse, much like being able to explain to someone why their technical decisions are setting them up for failure is a core skill for a software architect.
But from talking to nurses, this isn't the drive for negative workplace satisfaction. Patients who are hospitalized are less likely to be mentally stable: many pathways to hospitalization come from extremely poor decision making, and many of these people are repeatedly hospitalized. Combine this with the fact that it's a very physical job, primarily handled by women, and you have a multi-faceted problem that's not as easy to solve as just giving people right-think.
Personally I think the pathway to fixing this is appropriately valuing nursing care, what is often a highly-skilled profession with large physical, legal, and downstream risk, and compensating people appropriately. While nursing is a disproportionately paid job relative to educational requirements, current compensation really doesn't accurately account for just how demanding a job it is.
The amount of nurses you see who become addicted to painkillers, benzos, etc., is truly sad. Much like teaching, it's an area where I feel that society is inaccurately evaluating what the overall impact could be if the role functioned well.
All jobs suck donkey dick, but jobs directly dealing with sick and dying people are on a different level.
There's a culture problem there.
Mistreatment by doctors and management isn't excused by that, but I think it can be seen (partially) through that lens.