One challenge is that the dataset I reference doesn't have data post 1998. Since our discipline has grown and changed since then a more recent dataset might show something more interesting.
I would say the stress is the biggest for SaaS type of software products, as someone posted a video here about "Constant Contact", it's described as the slow ramp of death because it takes so long and hard to reach that magic upward slope.
These are all just my magical assumptions based on my own situation and experience. I'm sure there's ton of positive, empathetic, emotionally intelligent coder/hacker/entrepreneurs although there's lot of Aspies, who studies have shown to be greater risk of depression.