Camille ult kinda lacks counter play because the AOE knockback give her time to kill her target...
Think of late game when it take 1-2 seconds to kill a squishy. Camille ult guaranties this opportunity by locking her target in an inescapable cage while brief knocking back the target allies.
As if the lockdown isn't bad enough, but the knockback prevents her team from reacting fast enough to save her target. That would be fine if she was a pure assassin gated by cooldowns, but she is not, she is a bruiser as well.
Riot may think her ult has counter play, but in reality, there isn't much counter play here.
