First and foremost the mistake and misconception a lot of players especially those being fueled by rage make is nerfs are to make a champion useless. They are only to make a champion weaker but still just as viable (Unless it's an unintended role which should have never happened especially if it's unhealthy like tank ekko). Now while riot has made some horrible balancing choices such as olaf'd(never want this to EVER happen), irelia'd(This nerf pattern is by far the best since it's slowly toning down although in some champion cases it's obvious what needed the nerf and it turns into a reverse skarner situation, skarner'd (Which while I was fearful it didn't happen to vlad where they kept buffing the wrong points till buffing the right one then have to nerf it hard), sejuani'd (The 2nd worst nerf type where they nerf users of something then nerf what they use essentially the main point and logic of your useless nerf debate), and while i'm glad it hasn't happened again teemo'd (when he got his shroom bounces the duration was being halved which was being called a buffed at first but more took notice that it was actually a nerf).
Now I do like irelia'd type nerfing which is what's currently happening I'll talk about a few specific champs.
Soraka- I'm not talking about this for long first and foremost the grievous wound change was a mistake but while I say that I'm with riot on trying that out it did give good feedback on more utility supports. While it might have seemed like useless nerfs which it was since grievous wounds came back(hmm in a way soraka was sejuani'd she was abusing grievous wound being gone to her and then it came back xD)
Zed- Seems like after shortly talking about soraka you think I'd be against the QSS change too however I fully agree with it first and foremost grabbing a MR item doesn't counter an AD. The nerfs zed got so far are actually the proper ones though where he's rewarded less for hitting a single shuriken which anyone can do but given more for landing multiple which a lot of zed have been talking about for quite some time. Not saying he's fine now but that lone was the proper change. The real non-rage fueled nerf that zed needs though is his passive no longer working on winions and his slow moved from his on-demand AoE shadow to his passive which I've been asking for even before the qss removal. Now enough about my thoughts on where zed needs nerfing. Zed isn't extremely OP or broken to need hard nerfs he's just the same assassin he always has been and while people may not want to admit his weaknesses he does have them and qss was not one of them. Sure you can make cases of you were able to 1v1 zed or zed couldn't dive you in the middle of your team but first even a duelist adc shouldn't be going alone and second if your team let zed dive the adc without peeling that's the team's error.
QSS did nothing to most recurring case of how zed interacts with the enemy team where he harasses and just uses ulti to gap close but was used for the things less appealing like all-ins which shouldn't have happened in the first place. I know this post isn't strictly about zed or QSS but nerfing in general but I feel the qss change helped promote a bit more team play in the game and while zed does need nerfing what he's gotten so far isn't "useless" per say.
Ekko- from his release and I'm ashamed I didn't see it but ekko should have NEVER had his W as an assassin. Riot literally removed stuns from eve and silences from assassins and even said they didn't want multiple or reliable hard CCs or CCs that prevent counter attacks on assassins (Fizz kinda tethers towards this which I'll say below but since it's his ulti and only his ulti I don't really emphasize.). Now the nerfs ekko got aren't useless if they continue this path but what they should have done is rework ekko's W into something else or remove 2 not 1 but TWO of ekko's slows and gave him other bonuses atm I consider 2+ low CD or reliable 40%+ slows to be perma-slow and I also consider perma-slow a hard-CC. Hence ekko is in fact an assassin who fully goes against riot's views on assassins as long as he has his zoning hard CC W or multiple slows, Not to mention since his W is MUCH easier to land as a tank ekko well you pretty much can figure out what happened since tank ekko been a thing since release and gotten extremely broken recently. Again I'm not fully saying the nerfs to ekko are useless if they continue this path but just the wrong nerfs.
Kindred- Sadly I never even tried kindred so I can't identify her power/strengths/weaknesses. And yes I'm not saying you're one who would just ignore someone just cause they play something majority don't like but I have played a lot of zed albeit it was mostly for a month or 2 after release I have played him.
Nidalee- Honestly those are definitely not useless nerfs they're targeting where she needed to be targeted overall it's just that they're irelia'ing it.
Azir- He's full blown being irelia'd it's not useless at all though exactly where he needs to be targeted while I'm not saying he deserves it since he's literally the hardest champion in the game even after how much I tried him I still can't get use to him personally. But hardest champion means nothing to those who already mastered him or still near the point of mastery.
You put kindred trice >.> WP bro WP.
TL;DR- Most of the champs currently who you think are being "uselessly nerfed" aren't they're just being irelia'd which is by far the best type of nerfing while it may be frustrating to see a champ you like being nerfed back to back or frustrated that they're not getting nerfed fast/heavy enough,it's better since you can slowly transition towards it, while I agree some things are the wrong nerfs (mostly only referring to ekko) I think if they continue nerfing ekko in that direction it MIGHT be good but I still think if ekko's recent nerfs were reverted and his W was rework they're be much better off then they can keep that said ability for a tank or a bruiser (bruisers are fighters I just REALLY hate the name change)
If I went off-track or you want something explained better reply btw I did type a lot and somewhat forgot the main point of your post for zed especially but I hope I addressed it correctly.
