I agree, I'm just speculating on the future. I dont think the answer is longer courses, I think its bigger penalties for missing.
Koepka isnt trying to miss, but he knows the advantage of 30-40 yards outweighs a rough approach, or a scramble. As tech improves and guys get stronger, I'm not sure its great for golf to see three and a half football field drives if they end up on the cart path half the time. May just be me