Seriously nerfing ADC?
Currently, ADC is one of the worst roles in the game with most ADCs below 50% win rate. We are seeing more and more Heimer and Cass in that lane and Zeal was nerfed. Now Cloak is being nerfed because people were stacking it because buying Zeal is incredibly inefficient, and it's either stacking attack speed or stacking crit chance early. Now people will still probably stack crit chance, but it will be inefficient as well. In this meta where games are won around 22 minutes in, you keep making ADCs take longer to hit their power spike, so by the time the game is over, most ADCs will have maybe one and a half to two full items. And yes, Stormrazor was a bit overtuned, but it's one of the reasons that ADCs are still a potential factor in this meta.