Culture is quite significant with PTSD... as stated, Australia is less talk, more do. America is more talk, less do. The actual equilibrium is an equal combination of both, being talk and do. Both cultures have flaws with trauma therapy.
The therapy model is flawed in some part, because the industry has adopted a sit in a room approach to try and solve a persons problems that exist in the actual world, not within the office. You have to take a person out of the room and into the problem area to get a real assessment and apply the real world techniques that can help a person. It can't all be achieved in an office, especially as a majority stop therapy when they walk out of the room, instead of putting everything they learn into constant action.
Therapy is a constant daily process that involves identification of every negative you experience. Then looking at what you can do differently to change that negative into a positive. Then the action stage, changing your cognitive and / or physical approach to that negative, changing it into an instinctive positive, whether thought or action.
People are lazy... it human nature, and therapists know it. I used to walk out of therapy and do nothing they said, because when I tried it caused more distress than they warned me off. If they did it with me, and talked me through it, then I would have picked it up faster. Because I am a can do personality, I eventually decided for myself to take action and improve... thus life progressively got better over the years, providing I still managed myself within known boundaries that I discovered along the way. I can go outside my own boundaries for brief periods, but extended periods knock me down... though recovery is quick because I expect the down due to knowing I am outside my normal manageable boundaries.
Even today... self therapy day to day. That is living with PTSD... you have to get highly motivated to control it, yet participate within life is part of controlling PTSD.