I think you are making too many assumptions about what kind of work and what work environments are stressful for different people.
Could the term "burn out" be abused? Of course, it's something that is difficult for others to verify. That fact doesn't make it less real for those actually experiencing it.
If you are unable to cope with some levels of stress it is not the coding that is the problem, it is you. Or do we just go around blaming everything else for our problems?
Should I blame you or me for my karma score? Come on...
He took ownership of the situation and made specific changes in his life. And guess what? It was a good thing. He said he is doing better now.
Sure, often times people struggle with making these types of improvements in their lives, but I think it is pretty antagonistic to view that as some sort of shameful moral failing, as you seem to be describing. For some, they might not have a lot of great options in the near term, and dealing with that can be difficult.
What's your main point here? It seems like you have some sort of axe to grind.