Yes.Do you believe one steps should be usable self-defense in of themselves? Or it is merely to teach technique and physical mechanics?
Unless your one steps are based on completely unrealistic attacks (chi ball deflection, for example), they will have some degree of SD value and will, of course, teach mechanics.
They seem to. My students practice one steps to learn the technique and then are made to apply the techniques in a more free form setting.As a further question, do you believe the one steps you use right now align themselves 100% to the goals you have for them?
Daniel