I hate this "Bot lane stole my elo" circle jerk. I really do.
Like, you guys are whining about your bot lanes losing games, but you're probably just not trying hard enough to remember when your top laner fed a skirmisher like Fiora or Riven, or when your mid laner just sat mid and let his enemy laner roam 5 times, or when your jungler managed to die in every gank he did...or didn't gank at all.
It isn't just bot lane that can single-handedly cost a game. Out of the 3 placement games I lost, one of them was single-handedly caused by my top laner shitting the bed, even when my jungler spent all his time top, while I didn't get a lick of jungle help (didn't need it that much, but if that was gonna happen, he should have gone to other lanes, anyway). The real problem I think we have is that people are a bit tired of the marksman class feeling strong, and they want other types of champs to be viable mid/late game carry options comparable to marksmen, for a change. That type of complaint is way stronger and more understandable than complaining about which lane is losing you games. ANY lane can win or lose a game.