Perma banned justified?

I am going to copy the text from game and PLEASE keep in mind the guy on the other end was flaming super hard and harassing me nearly all game and yes i know I should not have typed back and i usually don't but this guy got to me for some reason and I typed back and tried to make sure I didn't say anything vulgar or use any cuss words, if I knew such minor talk in game could get you banned I would just mute all every game. If I deserve it then w/e I will move on just wondering what yalls opinion is if this ban is justified as me being toxic and not deserving to ever play the game again or if the ban system is a little too harsh. Please give me honest opinion.

Game 1 Pre-Game Araminator: omg this isnt aram? Araminator: well this fkin sux Araminator: i dont play anything but aram Araminator: idk how i clicked on anything else Araminator: idk who to even play Araminator: this ok? Araminator: we have 4 ad champs Araminator: wtf you whining about In-Game Araminator: i literally said idonly play aram... Araminator: now i flashed on accident typing... Araminator: now you tilt me so hard good job Araminator: not ebene helping you Araminator: flame more see how much that helps Araminator: idk if you think flaming me gonn make me play better Araminator: the flaming yasuo feeding...shocker Araminator: vayne u drunk Araminator: yall playin aram lol Araminator: 3v1 mid while we lose bot Araminator: so they on rift drag and got 1 bot... Araminator: yall trying to split against supp while tam wins game...bronze 4 lyfe Araminator: ? Araminator: yall do know im the supp? Araminator: wow u guys r bad i literally only play aram and beating you Araminator: first time rakan?
Araminator: cuz she roams Araminator: doenst get some cheezy kills then do nothing like u did Araminator: you ks all the kills then dont carry Araminator: if you carrying y it so close? Araminator: what a noob Araminator: 1v5 Araminator: i literally hti all 4 with cage wtf u talking about Araminator: you just bad Araminator: you had a tripple knock up 1v5...grats...feeder Araminator: dive in 1v5 then blame team,...typical bronze Araminator: gotta carry this heavy yas... Araminator: typical bronze Araminator: sure kid...i chose who i play with Araminator: go back to school kid Araminator: no im not Araminator: typical bronze Araminator: yas going in 1v5 again Araminator: getting us kills Araminator: the 1v5 ksing legend Araminator: who said i was? Araminator: you the one been blaming Araminator: you just mad now cuz i called you out on your bs Araminator: like a typical bronze Araminator: you started it...just not smart enough to finish Araminator: and again Araminator: you dont get kills unless team gets them low and you ks Araminator: otherwise you just 1v5 and feed Araminator: you cant Araminator: cuz you got nothing to say Araminator: you know im right Araminator: thank god kayne doenst sux Araminator: mid so fed...free reign on game roaming while mid ks Araminator: wouldnt be a prob if you could keep up with their mid Araminator: our mid < their mid Araminator: i really dont care i aram main Game 2 Pre-Game Araminator: go ad Araminator: what? im saying go ad champ mid Araminator: not adc Araminator: you dont know what ad means? Araminator: i didnt say adc Araminator: yea no tank doesnt matter In-Game Araminator: fids poke 2 much Araminator: i need to be playing him Araminator: this isnt a good pick into fids Araminator: heim would nt be good either Araminator: 4 bot Araminator: ? Araminator: this panth just blaming across the board lol he a toxic mofo Araminator: you must be new to the game Araminator: so lets aram it down mid Araminator: lol you just mad twitch Araminator: 2 top Araminator: yall can thank bot lane for the carry Araminator: looks like it worked to me... Araminator: 4 for 1 unless you think thats worth ;) Araminator: lol twitch focus the 2/12 support...good plan Araminator: nothing from that cept the base stats even helps you lol Araminator: lol kai sa kill me or save base? Araminator: stfu nub Araminator: you feed and let mid roam all game u sux Araminator: i just 1v1 the twitch... Araminator: you lost 4v4 dont blame me

I really don't think anything I said was that bad, maybe slightly aggressive but I feel like I kept it at least pg-13...and if that if pg-13 is too hardcore for this game then DAMN lol