Muscle Confusion

A lot of body builders who are at the top, don't apply progressive overload. They go in and use muscle confusion and get fantastic results. So i would potentially argue, just based on that basis, that maybe progressive overload isn't required for hypertrophy, but it justke accentuates progress if that makes sense. Maybe these people who are using musso confusion do, in fact, have some form of progression in place, they just don't realize it.