I think the idea of it is mainly for inexperienced pilots, so that they can focus on one thing at a time
Not a valid argument at all. Providing the instructor is capable of demonstrating the correct technique (and some instructors have problems in this regard) the student should be able to replicate the manoevre after competent instructing. The student should not be certified competent to go solo until he has demonstrated the correct stall recovery. Deliberately teaching a flawed technique such as skidding the dropped wing in order to attain wings level, is not the way to instruct.