Because he is too good at these things that makes him either feast or famine, especially the burst/pick potential. The point is making him in the middle, which is very good at mobility and cc, but mediocre at burst. In this case he can perform in various situations and won’t be op when he won’t get killed after pick, and not trash when he can’t pick and dies.
The point is making him harder to kill but also harder to get kills. The goal is only “more on the cc/interruption/burst side” when compared to the hamster which is the context. The current EXTREME cc and burst is supposed to be toned down.