Snarky provocations aren't welcome here, and have little to do with serious discussion (of PTSD or anything else), regardless of how correct your opinion is.
We detached this subthread from https://news.ycombinator.com/item?id=12032858 and marked it off-topic.
Complex systems are characterised by having many, often subtle, and frequently profound, failure and damage pathways.
There is a substantial psychological literature of the long-lasting effects of purely psychological trauma, for example, strongly implicated in borderline personality disorder. Literally -- the behavior and treatment one experiences as a child can have profound life-long impacts.
We're also quite familiar with "diseases" in which a specific symptom or manifestation receives a unified term or description, despite profoundly varying etiologies. You may be familiar with the term "cancer". It spawns variously from viral, chemical, radiological, photosensitive, and physical trauma origins.
Your comment is anything but constructive, though I don't feel it justified flagging. It's exceedingly dismissive, and displays exceptionally limited insight.
Please do better.
Best to think of the flag not as a judgement on the commenter, but on the impact of the comment itself. A wrong comment might actually be a net-positive if it sparks a series of great comments explaining the right answer. But here, the impact of the comment is obvious: it's a malignant jab, and everyone who took the time to flag it did HN a service.
I've expressed my judgement. Others can express theirs.
It's a possibly teachable moment. That requires the subject be capable of learning.
(A long-standing wish of mine is for some sort of long-term, portable, web-of-trust-like system for indicating, sharing (with select others), and tracking the reputation of various identities online. Whilst preserving the options for pseudonymity. A couple of decades in, and I'm still not fully settled on how to do this, though I've some thoughts....)