Physically, it's great because of the angle of the green, combined with it's width (or lack thereof).
Conceptually, It's great because BECAUSE for the last century, while the better golfer's opinion shaped the mindset that more and more length, and less and less width, were desirable aspects that made the game better. This sat there, lying in wait, for just this moment in time, proving to all those know-it-alls, they know nothing.