What I'm implying is that in a profession with high PTSD rates, the culture of "get back in the saddle" peer pressure is probably generally better than, say, a typical "detached professionalism" or even a "self-care" oriented culture.

Yes. Generally speaking, but we’re individuals not populations.

Unfortunately that was not the case here, and his untreated PTSD left him very vulnerable to the effects of additional traumatic (work) experiences. He really needed a career change, but kept getting pushed back into service. With little in the way of effective treatment, it was hard to watch him being treated like that.