Of course it isn’t right. When did this become right or wrong? It’s about traumatic or not. There are lots of things in life you have to deal with that aren’t right. They’re very wrong oftentimes, but you deal with that. Being traumatized over something like that is just insane.
I would get being upset with it maybe for a couple days. But having a long lasting mental injury because you got handcuffed is… Impressively weak.