Just correcting several peoples misconception that it involves no physical activity at all. Also, the risk of injury is from several hours of rigorous practicing every day over months/years, not simply "playing games".
On topic, it really doesn't matter what they are called, or what people believe what they should be called based on their opinions, what matters is that athlete visa's to the US at least, are available to them.
The government isn't going to create a separate visa category just to soothe some people's feelings. What matters to them, is the purpose of their stay, which is to compete against other people for money.