I did IT support in a hospital for a year. Nurses do everything. Their job is both hard and thankless. I do not doubt satisfaction is low.
But this sounds like the employee satisfaction corollary to Sturgeon’s Law [1].
“90% of employed people are considering leaving their profession in the next year.”
This survey would be more compelling if it compared nurses responses with the general employed population over time. I only skimmed so maybe it does and I missed it.