Ryze Nerf??? Really?

Riot literally said before Preseason that he was really weak, then instead of just canceling the ability to use stopwatch with ult, they completely take out being able to zhonya at all for ult. His win rate dropped to nearly 39%. Isn't it pretty contradictory that they say he needs buffs and then nerf a play that made him considerably viable?

v8.3 Activating Stopwatch or Zhonya’s now cancels Ryze’s ultimate as though he had been interrupted by crowd control. When the original decision was made to allow Ryze to use Zhonya's Hourglass to guarantee his ultimate, we were on the fence about this interaction, but it was deemed acceptable because he paid a significant cost to access it. Zhonya's Hourglass either came later in the game, or delayed core items in Ryze's already expensive build. Now that the Inspiration tree has made Zhonya's effect much easier to access, we’re not comfortable with keeping this low gameplay interaction intact.

THE ULTIMATE CC Activating Stopwatch or Zhonya's now cancel's Ryze's ultimate as though he had been interrupted by crowd control. <<<<<<<<

v7.22 BASE HEALTH : [558.48] ⇒ 570 HEALTH GROWTH STAT : [86] ⇒ 98

v7.18 W ratio increased. Ryze has been in a pretty weak place for a while. We don’t want to make it any easier for him to reach his strong late game, but we think he could use a bit more damage in his combo once he’s started to really build ability power.