The people that complain about champs are winning
For some reason, people just complain about assassins. They hate how much burst they have despite it being their purpose and they don't complain about the ADC role which generally decides games. And now what? Assassins are being nerfed. People who didn't want them nerfed are losing and others are winning for whining. Zed's main skill was outplaying, so anyone who lost to Zed and wanted him nerfed was because they were raging.
Realistically, unless you made amazing ult plays, Zed wasn't hard to beat. Also
completely counters it. Next is Fizz. People say that Fizz is OP when in reality he is easy to counter/kill. First off anyone with poke would destroy him early. Second silences and snares leave him useless. Third, Heimer and Azir completely zone him early game and Heimer can keep up with him later as well. Though yes his Q was overpowered, he wasn't as broken as people make him out to be. Then Akali. While not a huge nerf, reducing her ult range requires her to get lucky or to make big plays. Also, her E doesn't have good range or anything so without setting off the Mark it is useless mid and late game. So that is just 3 main assassins who were nerfed which makes mages who prioritize in long fights better than them. Then if I went on to cases such as LeBlanc and Diana who pretty much are exactly like the three I just mentioned, they haven't been touched. Diana is never played however and LeBlanc has so much juke that everyone plays her on Hide and Seek more than in game. Kha'Zix you have nerfed countless times, but we have finally seemed to reach an end to that and he is still good for assassinating, but is very squishy until he gets randuin's or whatever tank item you get on him. Rengar still throws out tons of damage though while ulting early and in general later. Nobody will complain about him for good reason as he is easy to stop. Then on to marksman, they all get nerfed yet still deal a ton of damage making it useless, especially since most of the best ADCs are people with stacking passives like Vayne and Varus. ADCs have no room to get nerfed as that would make them pointless ingame however. Junglers generally are better if they have cc or they are Evelynn who can just sit IN your lane and wait to Q you. Others do mainly focus on landing a simple skillshot and locking someone down to kill which is still as effective. Tanks are only good early as late game Void Staff and Last Whisper eliminate them quickly and they might as well go full AD or full AP. Finally, fighters seem to be the most balanced role unless you talk about ones who have massive damage with decent health and cc which completely destroys the carries. Unfortunately, they can't get to most carries since they are mostly melee. Yet then you nerf the carries that are required to dive on to an enemy to kill them leaving the melee champs useless so pretty much you are saying that if you are not ranged in the meta, you are useless in the meta. Fizz will die out, Akali will still remain due to her damage output, and Zed is already more common in Hide and Seek than any other game mode. I thought whiners weren't supposed to be the winner of everything. Then again, it makes people feel bad that the people even younger than me who shouldn't have started the game since they weren't 13 yet are winning when they know nothing about how the game works.