just looked at the article that you made reference to.
Frankly, it sounds more like marketing to me than anything else. By that definition, all of my clients are either prehab or post-rehab since none of them are training for athletic performance. I have been training all of them to function better in real life, and that may be just a smart way of calling it something new.
To me, all training has the goal of making people move more efficiently but I really do not like the focus on injury prevention even though that may be the likely outcome. It puts the emphasis on a negative aspect, and I personally prefer to place it on something positive.