Riot does promote communication, but it does seem that communication in game gets you chat restricted take a example.
You are playing the game you know yourself that you got a bot lane feeders and a jungler who sucks they die 4 times and the enemy is just getting fed and you say in chat (Group up we can win as a team now with forced fights in our favor and objectives contested if not we likely lose).
Next thing (Reported for negative behavior) ( And that is the polite way to put it when you got 3 unskilled feeders on a team, but usually they get toxic and just feed more rather than try to win without feeding more and when I say feed I mean like 50 deaths to the enemy no joke?)
This doesn't happen very often but Junglers who intentionally run in a lane with no brains and feed the enemy to throw off the lane, then calling for group fight and forced objectives early and team gets toxic.
(Reported for random reason.)
Players who refuse to understand there are other types of play other than staying in a lane until first tower or more are down, and understanding its a team game try and help others, then players who get toxic in games debating a specific issue in chat after they already got an answer constantly (This is toxic) but they get away with filing reports for another random reason.
Players Champion Select, who do not talk in chat get away with Refusing to communicate and making toxicity by auto locking creating issues in game meta issues then complaining about it.
( Reported for another random reason.)
And the last one Do anything someone doesn't like (Get Reported) no matter what it is even if you are just having a bad game.
Lets talk about toxicity though.
I don't see asking a player to (Please Stop Feeding) as being toxic (Perhaps there are better ways to put it) however lets say ranked for example because it is what I mainly play in Silver 2 you are supposed to playing on a Silver 2 level but some players play like they are Bronze 5, and saying stop feeding I don't see as being toxic, there are other things you can do like (calling group) earlier or other tactics rather than stop feeding.
Ranked (Is Not A Training Session) I could spend 30 minutes explaining to everyone on my team who is (Feeding) and doing bad exactly what they are doing wrong (Item Wise) (Rune Wise) and likely (Skill Wise) but hey I do not have the ability to pause a game and spend 30 minutes looking over everyone in the game to explain why the hell you are feeding the enemy massively and try to help you with it honestly I would like to, but its just not possible, there are however resources on (YouTube) and (Solomid.net) as well as (Championselect.net) that can help you with builds and tips the next thing is (Knowing Your Skills) and the (Enemy's Skills) as well as (Skill Ranges of yours and the enemy) and (Cool Down Times) This information helps you a lot and if you have played many games you should know this information.
Not sure if this is true, but someone told me Riot has a 0 tolerance policy and will never undo a restriction/ban/permaban. Possibly just someone who didnt know what they are talking about. Can you verify or deny this for me?
Riot can remove restrictions and bans, any game company can remove a ban, or restriction, or edit anything on an account they want to as an administrator the only question is if Riot would do it its not they can't its that they don't want to.
http://www.youtube.com/watch?v=TuF3qRCQ26Q
http://www.youtube.com/watch?v=scs1J4B2nlU