My 14- Day ban and the Vayne who went 0-59

3 Days ago I was suspended for 14 days for using a "homophobic" slur with my duo partner in chat. I was giving him a hard time in-game chat while we were in voice comms laughing about the game and what not. The remaining members of my team reported me and I got the suspension. Ok, shouldn't use phrases like that, I get the suspensions, I deserved it for being a jerk. So,I jump on my other account and pick up playing with the same friend. That's when I met... this person... I think it's against the rules to call players out specifically, but he goes Urgot mid, only buys mobi boots and homeguards and goes 0-35. His only desire is to die to mid turret. I think it's funny, but then i check his acct, he does this like... every 4th game..a few games before the urgot game he went 0-59 as vayne yet... he is still playing. I know he is because I reported him and was never notified that my feedback contributed to the behavior modification of another summoner. This makes me wonder, how much less "toxic" would chat and the game be if people like THIS were handled like toxic chat. It took approximately 5 minutes to get my ban. EVEN if he did EVENTUALLY get banned, it's not like 0-59 with only mobi boots and talisman of ascension is hard to spot. Why isn't he IMMEDIATELY suspended?

TL;DR too much emphasis on toxic which can be solved with a mute button, and not enough emphasis on dealing with the real problem.

Edit for clarity: In the game I played the summoner went 0-35 Urgot, I checked his account and has an 0-59 vayne.

Also, is it against forum rules to post proof, if it calls out a specific player?

Edited: I added screenshots of the games.