I agree with this guy and feel his frustration. I mostly play normals and find in every game there is rage, blaming, trolling, swearing from at least one member of one of the teams... I report these people every game regardless of whose team they're on and their score because honestly i'd never want to know or play with such a person. They're not simply venting, they're going way overboard. I have them every game and watch innocent victims getting targeted, sometimes defend them and consequently get targeted myself. They're in every match so I can only assume they don't get banned and that there's no negative consequence to being an uncooperative ******* in this team based game?
Even right now I feel like posting this reply is a pointless endeavour but what else can we do??? It's all up to Riot to provide a functional working game and monitor/regulate the online content it produces. I'm sure they delete offensive and misleading posts in fear of being sued, why not players?
Anyway that's my 2 cents, fat chance they'll do anything and we all know it. Sad reality is the only thing that would cause a change in their game is a huge drop in revenue. Until that happens they have no motivation to change their product. We'll probably see that when Heart of the Swarm is released and Blizzard Dota accompanies it. I know I will be checking it out, and probably be taking another look at Dota 2 on Steam as well.