While there are specific therapies designed to help with various kinds of trauma, I myself find that the "supportive" kind as you put it works for me. I also find that some symptoms do come anyway even after working at it for a long time.

I guess I feel like the benefit of a more open-ended therapy is that it allows other things to be handled in a way that feels more real. After all I'm more than just the symptoms of PTSD. And if I want my life and future to be more as well I'd rather have a therapy that can support that. Just one point of view, not meant to be advice.