LMFAO no one is going to even notice the nerf. Regardless kennen hasn't been popular recently so I don't even know why they are doing this stupid nerf.
Consider you main kennen. You've played him 70% of the time you've played league. This is the champ you love most, you can control best, and is a blast to play.
If Riot nerfs your champ by reducing the damage his auto attacks deal, you're ok with that. Sure it sucks, but it doesn't change how you play the champ, just gotta harass a bit less. Same goes for Riot nerfing or re-scaling your abilities.
But when they change the range of your freakin auto-attack... wtf? You've logged countless hours last hitting and trying to avoid harass by being just out of range and now all the practice is garbage. it just doesn't feel right. I mean, for the people who don't normally play kennen they wont care, cause they just throw stupid darts and deal dmg with fail ults. But for those who truly spend time on this champ and know all the intricacies, it's really annoying to have to relearn.
I say this cause it happened with me and graves, to a lesser extent. I played that champ a lot when he was released. He was the first champ I actually bought within the first 2 weeks of release since i started league. Then soon after they nerfed his ranged. I understand why, it's just really frustrating to play with, vs ya know, just reducing his damage.