I don't see OHP behind the neck as a "harder" exercise. For all I care - it is a simpler movement, the bar is going up in a straight line, the head is not in the way...
No, I did those because I could not get the hang of Conventional Deadlift (they felt awkward not matter what I tried), and the coaches around were not very useful,
however, as a newbie I drew a lot...
Having to necessarily work with heavy weights calls for more intelligent programming (because you have to get both volume and practice with heavy weights,...
I doubt it is "perfect", because there is actually a lot of "advanced" complexity to it. (and just because the movement looks good, doesn't mean you actually know how to fire your neurons to...