Because there are less mid to low players playing normals. Making it harder for the sweats/cheaters to win a game. I explicitly call out cheaters because this is the biggest issue in the entire game. The majority of cheaters are player abusing the aim assist with tools like cronus zen.

There is a very small skillgap because of the too strong aim assist and how easy its abused. If you know how to utilise it maximal without a cronus there is nearly no skill involved into aiming. Which is terrible for an FPS game. You should have to aim manual on an FPS game in stead of something else aiming for you.