Should your LP gain be affected by other players?

I think the fact everyone starts flaming and rages in ranked is because of the fact that whether they gain/lose the LP can be based on other team members. Now i am aware that people rage for other reasons too but for this topic we just going to stick with that. I think why their tends to be bad players even if you get to, lets say, plat and even gold is because a lot of times these players get carried during solo que and in a lot of cases by duo with someone. It needs to be a System where a player actually belongs should be based on individual talent and performance. Not on simply wins or loses. Now the fact that the LP you gain is solely based on wins and loses just doesn't really show if a player is good or bad. If someone goes afk and The team with 4 players win. The afk still gets the LP regardless if he did anything at all. Your LP should be based on performance. I think everyone knows that if LP you gain was really based on individual performance rather then simple win or lose. Then players would be in elo that they really belong in because how they play actually affects where they belong. Now some might argue "yeah well if you're good enough you can carry and win every game." Which is fine but the same concept applies. The player who is capable of carrying a whole team should be getting a lot of LP based on his/her amazing performance , but if the players in his team are getting "carried" then they shouldn't be getting the same or any LP as the player who is carrying, especially, when they aren't doing as well as the player that's carrying or are playing poorly.