Yea i get your point and at all but i do respectfully disagree.
Normals are more relaxed then Ranked, meaning Mordekaiser Support is viable as long as you play him like a support and are still trying to win (i got an unofficial penta with supp Morde :D; my way of supporting was by killing everyone who got near my TF ADC).
Just because it is Normals doesn't mean i shouldn't help leash or that it is ok to not leash. Winning is fun, if you want to win help your Jung so he can help you later on. If i forget to leash (it happens) i apologize to the jungler and if he doesn't want to gank then i tell him "Fine then we lose." usually that gets them to gank at least once.
When someone calls their lane it is because they want to have fun playing that lane, not because they are taking it seriously. I dont have fun playing Jungle and ADC so if you take my lane after i called it and force me into either of those roles im going to be super pissed, i want to have fun and i called it first...
I dont rage at people for feeding because they are against someone better then them, i do rage when they are intentionally feeding but not really in chat. Why? because it isnt fun when someone is trying to lose, where is the fun in a fed Irelia teleporting into your lane and 2 shotting you? Warding is also just a part of the game you need to do, if you want to win you need to ward. By not warding it is like you are trying to lose... intentionally losing is not fun...
If you picked Urgot top i would be 100% ok with it. In fact i might pick Sion and we could be UglyFatNoxianZombieBros.
So i get your point but you are taking the "Its just normals chill" too seriously, all that means is to stop raging about taking this or that, stop yelling about what champs people picked, stop barking orders at people, and stop acting like its the end of the world everytime someone dies. Basically just stop raging... That does not mean you can stop trying to win, that does not mean you can just ignore your team, that does not mean you get to feed, etc. you get my point...