Well its league not Dota 2 ( where you can be banned for chat and still play the game) . Riot has a community that is ruled through fear of bans not general kindness, I have never seen someone be flamed and actually apologize for playing badly or actively attempted to be nice to that person to make them stop. They only respond by with reporting that person even if their feeding have actively ruined the game for everyone else involved and are so stuck up they see nothing wrong with it.
Riot leads through fear like SJWs instead of love/understanding. You can see this dating back to Riot Lyte days and still continues into their policies and jsut look at some of the provacations Riot Tantrums gives. He never tries to be compensate and help these people. No, he publicly uses inside information to discredit anything that is about how bad the ban system is and defends a broken system (i think he might be before Lincoln if you catch me). Look at what Riot Lyte did when he moderated, he abused his power just like Riot Tantrum and others do by using private information to win arguments since they don't have the brain power to actually debate (just like Social Justice Warriors when they shutdown debates by shouting racist, misogyny,etc ). Never have I once seen a Riot employee actively take the side or even come close to the one that is banned, no they say their system is perfect and never makes mistakes.
Their system actively defends trolls that know how to manipulate their system while punishing normal people that obviosly get outraged when their time and effort is being wasted. They also use the term flaming so loosely its seen as so pathetic, "o you said something someone doesn't like" you must have flamed and they never actually review the cases or else they would most likely provide more than the chat logs for one side. They also never give you entire chat logs so people can't see how bad their system really is since it bans those that have a spine and can't sit for 30+ minutes while others actively waste their time then report at the end saying hope riot actually get these trolls this time (news flash they won't since they know how to work the system. Just look a troll's match history and you can see a lot of trolls get away with it for a long time)
In Dota 2 they also have actual voice chat so you can have a conversation much faster and not have to type out a paragraph. Also voice chat clears up a lot of confusion with what people mean and usually lets you actually make friends or help others in the game. This is why lol is seen as one of the most toxic ever in any game since the mute and report strategy is really quite absurd.
Riot has breed the culture of "o he said something i don't like so I'm gonna report and get em banned" instead of a healthy culture of every can have a say that they are having a bad time due to someone else. Then they can use that input to say okay lets correct this to the best of our abilities or explain why this is happening and make the experience good for everyone.
EXAMPLE FOR
Lets look at a situation here for example, Say your midlaner(or any other role really) keeps dying (no kills or assist) and at the third or fourth death you say "can you play more passive and stop feeding the enemy team or else this game will become unwinnable." They could just mute you after that and report you and that would be seen as flaming someone for doing poorly. But in reality (where most of us live but not Riot) this a perfectly acceptable request since if they continue with their behavior it will drag the whole team down. With us having to either carry them or them losing the game since their midlaner is fed and can stomp us now since they never stopped to think of the impact of their actions. I'm not saying they suck at the game, I'm saying they need to stop or we will lose the game. That you are drastically hurting our chances of winning so please and politely asking you to play more passive and stop so that others can have the chance of actually winning their lanes and not be stomped. But no one every says "sorry I am trying my best and I will try to play more passive so we have a chance" no this community just reports you after feeding more so that they can keep their ego in tact. When I use to play this game actively, I would always apologize for doing poorly since I knew my play was actively hurting others experiences,but no one else ever came to this conclusion. This community is so selfish and egotistical they think their experience is the only on that matters. That the 4 others are only mad because they aren't winning, when in fact they are angry since you refused to stop actively trying to win your lane so much so that you lead 4 others to lose the game off your decision to say I think i can finally beat this guy that has 4 kills and a lvl up on me.
The really sad part is the first person that realizes his role is not just about himself doing good, but about the team winning will get banned before the selfish jerk that ruins the game for 4 others since they neither stopped their actions or let their team know that they had made a mistake and they needed extra assistance to remedy it. Anyone can lose so much their team loses also, it takes an actual decent player to realize if I don't lose really really badly and just wait on my team to come help then we have a really good chance to win this.
TLDR: want a good community, look else where . Riot ruined this one.
