Rito at it again (ranked rant)

So I finally clawed my way out of provisionals and lo and behold 5/10 games won = bronze 5 and 3/10 = silver 5? My fiance and I played the same games, for the most part, save for two which I won where he lost the two that he played... HOW THE HELL IS THIS BALANCED?! Who the hell came up with this ranking system and what type of meds do you need to fix your brain? I have been playing league for a long time, and never have I felt more insulted than to be dragged back into bronze 5 after busting my ass trying to get out of it. I understand that you can pick up the slack for others, but when you have an afk every single match and no one can get along because of toxic players who just stop trying or feed because they got butthurt. It is not fair to anyone in the community who is trying their best only to be sent flying back into the pits of bronze hell. I have spoken with many people who share the same view and had the same thing happen to them. I have to spend weeks, even months trying to get out of this place and the toxicity has not changed one single bit, even with these new rules, people still go afk, they still leave, they still disconnect, they're still immature children so what exactly has been fixed with this? All the effort I put into learning, practicing, even reading up on how to best counter someone is for nothing it seems. The pure lack of care is stifling and rather unfair to anyone who isn't a raging buffoon who actually TRIES in ranked. My questions are: What exactly has been accomplished by punishing players who have bad connection? Why are good players punished because of other people's attitudes? Why is the fault of an individual still harming the team? Is there any future plans to better the community without punishing the decent people and finally getting rid of the trolls?