It's really hard to read this comment as anything but a quiet suggestion that perhaps PTSD is a result of mental health workers and not the result of trauma. What seems far more likely is that people trapped in cultures that have not really developed a strong mental health response (e.g., 20th century America) have few if any resources available to help people with their literally invisible condition, and they have been trained through stigma and other "culture-bound" behaviours to keep their problems to themselves and show that stiff upper lip.