Why do you think being banned for being toxic is unfair or unusual?

I see a lot of people on the boards say that riot treats us all like we're kids and shouldn't perma ban for being tocix because it's not a realistic punishment. You see a lot of arguments saying that being toxic does not equal assault, murder, etc and say it'd be the equivalent of going to jail for saying mean things. Those comparisons are misguided. Why do people always equate it to assault and murder. You realize you can get in trouble in real life for harassment, threats, and hate speach. Riot is literally enforcing rules that are in society. If I went to work and said anything most of the rangers said in this game I would be fired which I guess you could consider a perma ban. If I was still playing football and someone hit me with a low blow and I retaliated, the ref would penalize both of us and repeat offenses would lead to an ejection. The notion that riot is strict or unfair clearly comes from people who don't know how to function as a team in real life.