Meanwhile look at the way they nerfed Xayah. Kai'sa is a terror at all skill levels, Xayah was pretty middle of the pack bordering on underpowered, but in pro play she was good so they completely gutted her. Kai'sa, the golden god of League of Legends and ultra popular champion with more skins on the way who is ruining the game everywhere else? Ehh, 20% attack speed reduction on her second or third max spell at a point in the game she has already snowballed into her items should do the trick.
I honestly hate pro play. My only hope is that immediately after worlds they buff back all the champions they completely annihilated so that 0.0001% of the playerbase can have "fair" matches. It's bullshit that the actual people who play the game have to deal with terrible balance that multiplies the closer it gets to Worlds for the benefit of a couple hundred people at best, they should just put Worlds on a different special patch.