No, in general, they don't. We did though, and I loved it. Our training consisted mainly of calesthenics, drills and sparring. kata took a backseat. And that may be just what you need to best train yourself to become whatever you want to become. My, and I believe several others', point is that whether you use kata frequently in training or not, it is useful and is, for many styles, including mine, a critical aspect.