This is definitely a question of therapeutic orientation. You make a good point that short-term therapies have their merit, especially in agency settings, where clinicians don't have the time to work with clients that would make psychodyanmic therapies and "digging up old wounds" unethical. However, I'm a die-hard believer that just because you can teach someone how to deal better with intense emotions and dysfunctional coping mechanisms, doesn't mean that the underlying feelings of worthlessness, ineffectiveness, (or whatever they may be as there is a whole plethora) have been resolved and won't continue to plague that person. I think it is absolutely essential to bring the unconscious into consciosness in order to resolve it, otherwise these patterns will continue to repeat themselves in the person's lives through their relationships in an attempt to resolve these deep feelings of inadequacy. I think this is the main reason why so many clients in community mental health settings are stuck in that perpetual door where they continue to cycle through interns for years with very little progress. It's sad to me that this population is put with interns when they really need clinicians with long-term experience to help them resolve their underlying issues. This is what I meant by putting a band aid over the wound.
While the concept of the way you think influences the way you act is absolutely true, and can definitely produce huge growth in client's lives. They learn how to value themselves, think differently, and regulate their emotions, which is very important. I also challenge your idea of emotional regulation being the underlying problem. I believe that the past traumas and/or abuse are the actual underlying problem that are at the root of inability to regulate the emotions because they are like triggers being constantly pushed and sending the person into an "uncontrollable rage" until they can be brought out into the person's conscious, talked about, and resolved. I agree with you that the emotional regulation piece is absolutely crucial in getting the person to the point that they can handle the trauma and still function in their everyday life. But, that skeleton is most definitely still in the closet and is the proverbial calm beneath the storm. Just because you aren't talking about it in therapy doesn't mean it isn't still there causing problems in the person's life.