Developers are getting too spoiled. Did someone do the same research for teachers for example.
I've been a teacher (and a manager, all levels of software engineer up to principal, a construction worker, an inner-city and high gang-presence high school math teacher, a graphic designer, and worked under a yard maintenance guy from Mexico, and several other small jobs. The software stuff has been among the easiest jobs (even with mission critical systems failing in the middle of the night affecting millions of do…
Only in one country.
And comparing software development only with stressful jobs.
And if you still think that burnout is not a bigger issue in the software world, go around and look at how many 40+ or 50+ years old work in software.