Some good points and entertaining, I'd just like to point out that yelling at your team in game almost always pisses someone off, and then, angry or frustrated, they'll play worse... which usually leads to more yelling... then half the team has degenerated to typing instead of playing, then someone is so pissed off they just start feeding mercilessly, and then you've lost. Extreme negativity is a vicious cycle. :P

Basically, people who yell at their team and are negative for the hell of it are the people losing the game, to a much higher degree than anyone else.

Trolls lose games.

i am not a sheep; just because the forums say AP hecarim or AD annie or whatever are bad builds doesnt mean i automatically assume they are bad. the internet is full of idiots; why should i believe any of them? i want to experiment with a champion, and find out for myself if the build (or the champion) really is bad or not.
to give a more concrete example, lets look at warwick. for a long time, ww was looked at as one of the worst champs in the game. what's more, he only had 1 ability that does magic dmg; why would anyone put spell penetration on him? therefore, any build that includes magic pen is obviously trolling/bad? then, guardsman bob comes along, with his magewick build, and starts having lots of success. his increased visibility as a streamer certainly helped, but now warwick is built predominantly as a source of magic damage (even after riot nerfed his q).
you say you want every champ to be viable; but if you keep raging/dodging/saying "wtf zilean? n00b plz dont", you are going to miss that moment when a champion/unconventional build becomes viable. if the majority of lollers adopt a similar mindset, then these unconventional champs or builds can never push through, and can never be discovered; lol will slowly progress towards having the same 10 champs in every game.

I have never heard of a team of more skilled players losing to a team of less skilled players because the more skilled players were raging more. Why haven't I heard of that? Because the team of more skilled players isn't raging at eachother cause they're playing better than the team of less skilled players.

Also, spreadfred is right about champs "blooming" for the most part, but Riot really does help out and nudge champs towards the right direction. Even in Dominion now.
Next patch I'm sure Xin Zhao's winning precentage will go up 5-8%. Is that because all the ragers finally allowed Xin Zhao into their games and they all blossomed into beautiful flowers? Nah it's because Riot singled him out and threw delicious buffs at him. And some champions can be played more viably simply because certain others will get nerfed, too. Nome said they're looking into Yorick and Urgot soon. can't wait for that!!!!

you should make a blog dude, i'd rss that ****