They're referring to the semantic term. Also 'shell shock' is a more common term for WW1's version.

PTSD is also less common in soldiers than in other jobs. Many types of doctors (oncology, some branches of pediatrics) are pretty much expected to experience symptoms after a given number of years. It is also very very common amongst train engineers. And prison guards.

I propose Betteridge's law of internet comments:

Any question at the start of a reply can be answered with, "No, that's obviously not what they said, let's try to keep the drama to a minimum please."