Whe the faceroll champs are so bad for the game.

Noobies can carry themselves to too high of elo with them. Then when they get to where they actually have to play as a team, they don't even know how to play this game. They do not have good skills that scale well to higher levels of play. So when they are forced to rely on those skills, they suck really bad for their team and it shows really obviously.

They deny their allies the ability to practice a lot of things that are good at high elo. You need to be able to work as a team. These champions are anti-teamwork and at low elo most people that use them almost entirely act as a 1-player team. They do not help their team out at all and just chase down more kills for themselves.

They deny the opposing team the ability to practice most things that are good at high elo. As in, they also deny the other team getting better in ways that scale up to higher levels up play. As in stuff like it's too dangerous for anyone to ward, assuming they didn't have enough wards up earlier, so then they just all have to stay in base until the game ends since they'll just die if they go anywhere else.

It's also often not very fun to have them as allies on your team. They can sometimes still just be chasing enemies through the jungle at 50 minutes into the game, when they could have ended it long ago. Yes, the same is true for all champions but these ones seem to do it a lot more.

And of course, it's not very fun to play against them, either. Get zoned out of such a huge area because if you enter it you're dead with no possible hope of escaping.