IDK that it's such a black and white issue. Good or bad. You know? It just is. PTSD makes ours senses heightened... always on alert. Add to that that you might have been born with more sensitivity than most ppl, and voila! "too sensitive" is a disability... just mumbling here.
IMO the key thing is ...to work to be only as sensitive as you can be
healthily.
Take care.