The problem with boosting

Played a game of ranked today with a silver and bronzes. Some games are easy to carry but today our bronze jinx and anivia went up against a draven brand combo. Draven owned them bot lane, they kept feeding and trying to kill him rather than trying to farm and focus objectives and fed him more, he was at 36 kills.

After the game he tells me hes actually Diamond 1 and trying to boost someone.

This is the problem with league of legends low elo. Bronze players may actually be good enough to get out of bronze but there are so many boosters in this game that it holds them back.