How Did This Match Happen?
https://matchhistory.na.leagueoflegends.com/en/#match-details/NA1/2660657922/51443151?tab=overview
For the first time in my experience with League, I actually said "bad game" at the end of a match. I'm extremely concerned as to how the matchmaking system thought that this was, in any way, a good pairing. By the 20 minute mark (somehow people rejected a 15 minute surrender), I was actually becoming toxic.
Plat 3, Diamond 5, two Diamond 3s and an unranked player (who was autofilled, by the way) against a Challenger, two Masters, a Diamond 1, and a "Gold 4" who was obviously Smurfing, or otherwise not playing on their main account. Their team MMR total was around 250 higher than mine.
If this Gold player was matched with these other four as a fluke, Riot needs to ensure this doesn't happen in the future. If they all queued up together intentionally, Riot needs to know that this game was completely unacceptable, a waste of time, and completely demoralizing to five people.
If one low MMR player on the other team is going to mean five people are facing four others well beyond their own abilities, the system needs to favor the five over the one, especially if they have decided to play with friends that are at a much higher rank.