Yes, there are variations (like hedging, which I assume is what you mean by "jump and recover") which is a variation on not switching, but every scheme requires this:
You say that it doesn't take excellent defenders, but it's a fallacy that "positioning, awareness and 5 guys acting cohesively" only requires practice, effort and discipline. Every team tries, practices and has discipline--at the NBA level, it's incredibly rare to actually be "poorly coached" or to have players who don't try. At this level, it's the players who process what's happening the fastest and instinctively make the right decisions in real time who succeed. You've previously scoffed at the idea that NBA actions moves fast, but coaches, players and analysts all say that the NBA game is incredibly fast and difficult to process in real time. Even smart coaches and analysts often have to watch plays over and over to really understand what happened and what players should have done. Players actually doing it have to do it on the first take, without an overhead camera view.
Saying that defense is just about practice, discipline and/or effort is akin to saying that passing is just about practice, discipline and/or effort. Sure, making the easy, obvious pass is just about learning and discipline, just like making one easy and obvious defensive rotation. Making a pass through traffic to set up an action three passes away takes vision and innate talent, just as making a rotation with the awareness that the current action is just a feint to set up a second or third action takes innate talent. Playing modern, on-a-string defense requires five guys with good innate defensive awareness. We have about three such players in Turner, Harkless and Aminu.