If you've ever watched an eSports tournament, whether it's League of Legends, Counter-Strike: Global Offensive, or Fortnite, you might have noticed something
I can understand some level of tiling the keyboard, because then your left wrist can be holding straight. But the images and videos are a bit too extreme. I personally just move the keyboard a little bit to the left side on the desk and do not tilt. I tried to illustrate this with noob art