Its not that bronze-plat idiot suck
Most of them suck, but some of them are good
But even for most, those that are good sometime has the worst brain in their head because they don't know how to end game or take control over objectives.
While those who suck but know how a game should be end, they can't end because they lack the skills to do so which prevent them from doing it. (Just like every post you see here on the League Board) People come here everyday crying about how they lose game or need help getting boosted....and they would go on about explaining what kind of players they need and how to win game
They may have the right idea, but they suck so much it impossible to complete the task they wish to fulfill