Banning toxic players wont help with toxicity.
They will just make a smurf and betoxic to low levels and then in ranked. But you know any individual with a high enough IQ would work on the REAL problem beeing the ACTUAL reason people become toxic.
Even when people go full on rage mode there is a pattern something in the game that has created this negative enviroment that sucked them in and spit out this toxic duchebag.
Good examples would be a bunch of my friends who in game flame and tell people to litterally kill themselves and IRL they are some of the greatest lads i've met. They are not toxic because they are born assholes nor because of anger management issues they are toxic because the very game CONSISTENTLY fucks them.
When people int and go afk you get mad and toxic. Yet you don't ban inters. When people get trolled on purpose you don't ban them untill they do it for like 40-50 games personal example an account i had on EUW that i inted 33 WHOLE GAMES IN A ROW and i didnt get a SINGLE warning because i didnt flame a single game nor died under tower more than 5 times.
PROMO GAMES. ever since we got this new bs system toxicity has been all time high. 30% of my games ppl flame in champ select when someone doesnt pick something meta or that they like because they lost their promo for the 10th time because promos ARE ALWAYS stacked against you. I mean i still maintain high tier mechanics and macro and i will still strugle to win a promo series in any elo above gold 5 because the only thing more obvious than the promos algorithm beeing made to lose 90% of the time is the favoritism of the balance team towards adcs.
Try fixing these core problems that CREATE toxicity rather killing off players.
Litterally it's like a ZOMBIE virus where some dumbass keeps killing the zombies but let's the virus alive to infect more people but he thinks it's ok cause he killed half the zombie horde so they can't touch him anymore. Stupid example but it's pretty much exactly what you have been doing.
And do not worry toxicity will INFLATE soon with how bs the meta is and will continue so.
Just looking at the downvotes shows how dumb the snowflakes playing this game truly are.