I think there's far less point construction than there was in the past. From a purely third person observer, games appear to be slug-fests. Just keep hitting the ball as hard as you can until the other person caves in.
I think the "older crew", those that are 30 or older have a little more in the way of point construction. But the young guns, the new crew, I think they're just standing at the baseline hitting the ball as hard as they can, because they can.
I don't see much in the way of calculations, plans and strategies.