If we analyze the sport let's say, 30 years ago, we clearly see that the guys weren't so much relying on stamina, and defense. That changed because of the removed fast surfaces and the modern gear ? If Nadal was playing fifty years ago he won't be this good ? Why is tennis so inclined to change to guys who like to hit hard the ball instead of using smart decisions and intelligence ? That's what I love as a viewer. And why I loved watching guys like Santoro.
Smart is also winning, no? Santoro sometimes outsmarted himself by trying to be too cute or clever.
30 years ago, Borg was accused of being boring and dumb and all stamina and the iceman, etc. Let's not make the past all golden. Remember Lendl and Wilander were also baseline players who took a ton of time between points and played from the baseline and there were people who didn't like them either.
Playing styles aren't an indicator of a person's basic intelligence.