I'm not sure if "cheat" is the exact word to use here. They were all bought accounts or in the process of being boosted. One way to tell is by looking at a pla

I'm not sure if "cheat" is the exact word to use here. They were all bought accounts or in the process of being boosted. One way to tell is by looking at a player's match history and seeing their account plays one or two champions for a while repeatedly getting MVP with 20/0/x, and then suddenly switches champions and either plays significantly worse or somehow playing even better depending on the ELO. The opposite is also true--consistently playing horrendously, then suddenly switching to different champions and steamrolling beyond their ELO. There are networks of boosters and account sellers. Some people spend full time hours farming hundreds of accounts to level 30 for ranked play, and these accounts are purchased by other boosters who spend full time hours getting to Diamond+, to then resell. This is how you can find fresh level 30 accounts at the highest ranks--it's account farming. When you analyze closely, the majority of the community is composed of these bogus Chinese account farms. Hardly anyone is actually playing the game. This problem goes all the way even to the Challenger level; streamers constantly deal with this problem and Riot doesn't do anything. Even when League was having betting problems at the Grandmaster/Challenger level, of people betting against their own games and then "soft throwing" to make money, it wasn't Riot that did anything about this. It was the betting companies themselves that banned League from being gambled on their platforms.