They aren't, but this board is overrun by a bunch of cry baby defeatists that will tell you "the game is decided! Our bot lane is 0/3!". This shit is so dumb. The funny part is 99.9% of the people posting on this board are D5 and lower. Its hysterical watching silver players jump on the shitty bandwagon like people don't thrown games left and right at that ELO.
What it comes down to is people have to find some bullshit reason to blame when they can't climb. "Oh, jungler decides the game, nothing I can do" "oh, ADC decides the game, nothing I can do" "oh, bot lane decides the game, nothing I can do" "oh, the worst player decides the game, now I found an exuse where there is nothing I can do ever OMG elo hell exists I'm actually a fucking God but muh team keeps me in P5"
It's just a revolving door of excuses. People want to believe there is actually NOTHING they can do because then it's not their fault. In reality they suck at the game just like the rest of us