There is being considerate of other's life experiences and then there is being unreasonable. There's so many things that can trigger PTSD in people, are you suggesting we stop doing anything that may trigger someone's trauma? Some people get triggers from benign things (my mother used to suffer traumatic flashbacks from certain smells such as wet mud, I get panic attacks if someone comes up behind me and touches me, I've met someone who gets triggered by cars backfiring or balloons popping). The point is that fireworks, mud, people touching you, and backfiring cars are a part of normal life. There are a TONNE of possible triggers, we couldn't possibly avoid every one of them for every sufferer out there. It isn't up to the rest of the world to change their lives to revolve around us and our issues. It's our own responsibility to try to cope and deal with our problems as best we can. It sucks. I say this as someone who suffers from severe PTSD/agoraphobia among a number of other mental health issues that I have been working on for many years. It's really unfair that this has happened to us but it's also not fair to expect everyone else in the neighbourhood to stop having fun because we are sadly conditioned to have a traumatic response to something.
No, I found that kind of odd, too. A little offputting.