Not gonna lie, you seem like an ass. A complete asshole.
But, to be fair, I kinda see where you're coming from. I come from silver you see, land of the trolls and home of the smurfs. Generally, players like this go out of their way to bait you into being toxic, and you can't take their bait or this happens to you. Based on what you're saying, yeah, he seems like he's being a troll. A clever troll though, so Riot can't find him. Playing just to have fun in ranked is an incredibly toxic and selfish thought process, honestly. In ranked we play to win, and if you want to have fun in normal do it. I really don't care. I have played full medic squad with my friends in normal with a Taric sitting inside their base being healed by his teammates and dancing. Or a Singed that was proxy farming inbetween their inhibs and nexus going "THEY CAN'T PUSH WITHOUT MINIONS!" And yeah, those are crazy fun. Do we do that shit in ranked? GOD NO.
Because we know the mindset we are supposed to have in a ranked match, and it's an important one to carry. That being said, you seem like a complete ass. The kind of guy that bags on someone for going 0/4/0 in top lane without a gank while getting camped by an Elise and being dove by her and a Riven. Keep in mind, I have no other logs to base this off of, so this is going off of what I see here. But in this scenario, you're both in the wrong. You shouldn't have raged so hard, and he shouldn't have trolled like this.
Just my two cents.