If he keep saying the same story in thread to thread we cannot respond to it?
Not sure what you're referring to as far as his story goes, but claims of stolen valor without evidence isn't something we want getting into every thread. And responding to the poster and not to the topic, while allowed, drives these controversial topics into a ditch 9 times out of 10.
Which you guys are free to do. Just know it leads to topics disappearing and, eventually, suspensions as tempers flare. And it takes more work from the staff to watch everything closely. So just don't blow up my PM box when it happens.
EDIT: And, to be clear, a claim of stolen valor that was provable is something I'd personally take very very seriously. I think that's a ****** thing to do. Unfortunately, this is the internet where such claims are tough to insubstantiate. So, we work with what we've got.