Nemo observes a specific situation in a match where he didn't capitalize as well as he thought he could have ...and goes into training to find a 100% punish for that exact situation shortly after.
A 100% punish on whiffed Cammy lvl3 with your back to the wall, full resources and the opponent on burnout doesn't really deserve a nerf imo. By that point the fact that it ALWAYS kills is useless, there's an astronomical chance she will be below 100% anyways.