in any kind of competitive game, even against bots. imo, if you are not actively trying to win, then you are trolling and should be removed from the game.
i dont mind "off meta" or troll builds. wanna go full tank teemo mid in a comp game? go for it! as long as you are still trying to win, play however you want.
but as soon as you decide your afk or intentionally feeding, or running back and forth between lanes doing fuck all, fuck you get out.