I know I play better when I walk. Not exactly sure why. I think I just take more time to look around and not think to much about my swing. I tend to pay attention to details more when I walk...the wind, where the pin is, where to miss etc. For me it's more relaxing. Which I think leads to better golf.
Good point. And a lot of the top tour players are already "restricting" their swings for accuracy. My assumption would be they started with hitting the ball as far as they could and then dialled it down or made changes until they found the optimum distance/accuracy ratio. No need to restrict the swing further.
Guys like Jim Furyk and Matt Kuchar given their size and athleticism can hit the ball farther than they do during tournaments. Kuchar's swing speed is 5 mph slower than the tour average with his driver and there is no way he can't turn that up if he wanted to. Bryson Dechambeau has 2 driver swings, one with 113 mph swing speed (calls it the fairway finder) and the other (calls it "the crank") over 120.