The USGA doesn’t want to see -20 as the winner, but even +1 is bad for business, they would like to see a well earned, -4 or so. That requires tough conditions, but not obscene. Knowing that the weather can determine a lot of it, they have to be careful. If it’s going to be beautiful, cut those fairways tight and encourage a lot of roll into the rough and tighten the pins up on firm greens it can be just as miserable. If it’s wet, they need to have landing area, the ball cant get down in the rough and cost a stroke every single time a player misses. Finding a decent balance isn’t easy, especially when they have to plan it years in advance. I’m sure they added length to keep it from being over powered, but it needs to stay fair.