Unfair losses

Can someone explain to me why I lose LP when either my team has an afk mid way or when the the other team has a real smurf from a much higher rank? I understand that this doesn't happen much, if at all, in the high ranks that Riot cares about which is probably why they haven't done anything about it, but it happens so much in silver/gold that it needs to be dealt with. I'm not asking for afk's to be punished more. I'm just asking that riot stop making us lose LP in the games where it clearly isn't our fault. On a side note: is there any punishment or downside or anything for people that are smurfing, or riot just doesn't care that diamonds and higher just stomp people for videos? It seems pretty unfair for people who actually want to climb.
Best New

We're testing a new feature that gives the option to view discussion comments in chronological order. Some testers have pointed out situations in which they feel a linear view could be helpful, so we'd like see how you guys make use of it.

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