Why no Permamutes?

Why is it that we get banned for things we say in the chat? I'm not trolling inting or feeding (even though we all know that isn't bannable) but I call people silver and I get permanently banned. Why not just mute me? Restrict my ability to chat FOREVER. Turn off my all chat. But why do you have to stop me from playing on my account I've had for years? Challenger season 3 and yet I get banned because I'm arguing with another flamer in blind pick....

I just don't get why game bans are issued for chat offenses it makes 0 sense to me.

Game 1 Djerelle: what Djerelle: you dont want to come int Djerelle: in Djerelle: just one q Djerelle: llol Djerelle: this jg? Djerelle: theirs? Djerelle: ur the one building support Djerelle: yet taking kills Djerelle: oko silver Djerelle: LOL Djerelle: never seen gold lb Djerelle: never will see plat Djerelle: i see the map Djerelle: 2 components Djerelle: information and decision making Djerelle: lol Djerelle: flame on padawon Djerelle: muted Djerelle: lol Djerelle: i leave you on purpose Djerelle: yes Djerelle: nope Djerelle: im aware Djerelle: wrong Djerelle: you're wrong Djerelle: im talking to the mf Djerelle: she's not dying Djerelle: just you Djerelle: lb a coach Djerelle: report lb super toxic Djerelle: actually idc Djerelle: one is enough Djerelle: for what she''s said Djerelle: lol Djerelle: keep flaming Djerelle: shes a coach Djerelle: silver since s4 Djerelle: gg Djerelle: nah Djerelle: no Djerelle: you're flaming Djerelle: not trying Djerelle: oh Djerelle: do i 1v5 Djerelle: gg Djerelle: report lb Djerelle: super flame Game 2 Djerelle: jesus Djerelle: theres vision of that Djerelle: and you still die Djerelle: i say ff 15 Djerelle: i mean Djerelle: you can Djerelle: lol Djerelle: ahri is roaming Djerelle: no we lose Djerelle: they have more skill Djerelle: ggwp Djerelle: oh shit i dc Djerelle: wut happen u chees me Djerelle: ori muted me she said Djerelle: that lasted long huuh Djerelle: we can win! Djerelle: hmm maybe they will end Djerelle: i hope they cant Djerelle: we need to group around baron now Djerelle: focus krugs Djerelle: hmm maybe some dodge lesson Djerelle: im not toxic Djerelle: nor am i giving up Djerelle: quote please Djerelle: im saying neutral statements Djerelle: ori you had vision of the ganks man Djerelle: i think thats apparent Djerelle: that's fantastic what you think Djerelle: report ori Game 3 Djerelle: ahh Djerelle: promos Djerelle: nicezoe! Djerelle: nice! Djerelle: ekko might come bot Djerelle: greedy back Djerelle: why did bot Djerelle: not rotate Djerelle: when their bot Djerelle: is mid Djerelle: i guess Djerelle: they just get free tower Djerelle: i believe that's the early game Djerelle: now we have to catch up Djerelle: okay Djerelle: gg Djerelle: we lose Djerelle: until we groupfight Djerelle: or until nasus afk's long enough Djerelle: but Djerelle: he's pretty dumb Djerelle: kaisa just one manned rift Djerelle: he had no clue Djerelle: s Djerelle: so Djerelle: i think this one is done Djerelle: gg wp Djerelle: open mid Djerelle: and now nasus dies Djerelle: 5v1 Djerelle: but nothing between the ears Djerelle: hit the tower Djerelle: lol Djerelle: one zoe hit Djerelle: tower dies Djerelle: no one dies to tower Djerelle: they get drag Djerelle: LOL Djerelle: omg Djerelle: ff Djerelle: that pathing guys Djerelle: brand what lane u play Djerelle: ur autofilled Djerelle: its my promos im due a lsos Djerelle: shit happens on to the next one Djerelle: gg wp Djerelle: nice try guys Djerelle: top is a bit useless Djerelle: brand autofill Djerelle: lots of deaths all around Djerelle: gg