First, you are here to complain. I have no problem with complaints, but I was raised with the belief that if you don't have a better way of doing things, you should not complain about how they are being done until you do. So, how would you change the way things are done?
"Riot is too lazy to hire real people to look at it"... no... Riot is in charge of a FREE TO PLAY GAME. This isn't Blizzard or Sony who charge you a monthly fee for access to this stuff... they don't have a consistant income. It is possible (although remote) that they could go WEEKS at a time without a dime coming into their game. It would be irresponsible of them to hire a team to do this as well, because those people will simply be vilanized no different than you are trying to do to the players... the only difference is the tribunal is a larger system which helps weed out the very "troll behavior" you are complaining about just based on sheer volume.
Having said that, of course there are some trolls, however, there are also a LOT of us that go on, read every line of text, and look at things objectively. You know what I find? in 80-85% of the cases I am reading, the player disrupted the game, and made it no fun for at least 4 other, if not 9 other players.
Show us your instance where you were banned? Prove to us it was trolls in tribunal and not your bad attitude/toxic play. Otherwise, there is no point in you posting here at all. You are proving nothing except that we shouldn't trust you or listen to you.