Love the game! Hoping to get some more play out of it.
Basically it is considered less sporting by more skillful players. In other words anyone can slash. But not everyone can execute perfect shift grabs, morph on top of people, and out think and out maneuver the counselors. Those that can can crush a whole lobby without slashing. And it is annoying to get slashed when you know that's the only way Jason can get a kill. So in other words it requires more skill to kill without slashing and that is lauded by higher ranked players.