PTSD is misunderstood

Does anyone find it annoying when people say things like if you were really afraid you would hide or you wouldn’t fight back? Or if you left and you hear someone being loud you don’t have ptsd because if you did you wouldn’t have gotten involved. Meanwhile imagine another example where a veteran was told that if you really had ptsd and certain things set you off, you would hide from fireworks, for instance, not be up with insomnia.