Why do some people in silver mute people at the start of the game and then perform badly?

Like trying to counterjungle from level 1 by rushing mobility boots on Udyr without finishing a jungle item, ignore open inhibitors as Tryndamere until the enemy team has won a 5v4 before going in, or initiate as Ashe when landing even a W is a challenge?

Is it a psychological thing? Are they afraid that someone will tell them that Tear is a bad item to rush on Jinx?