There are too many players whose division is higher than their skill is

Sometimes when I'm playing ranked, I meet some really bad players. Not like bad players who just have a bad game, just really, really bad players. They are not only playing very horrible, but blaming others for their mistakes, also they don't know proper English, and they use words only bronzes and low silvers use (noob, idiot, etc.) We all met some of these players in normal games when we were playing with our newbie friends. But the sad thing that some of these players somehow get up to Plat and High Gold and that's a problem DuoQ should be banned from this game. I know the system tries to balance the game, so, for example if one person is G5 the other is G1 the elo they will be playing in will be G3, but that's not the solution. It may be bad for the G5, but the G1 is probably gonna carry it. Now you may be thinking, yeah, but the G5 will be a disadvantage. Well, if they are playing duo-botlane, he won't be, since playing support in duoQ...... I have seen insane amount of players who got dia/plat/gold by playing in duoQ and playing support all the time. Sometimes when I see posts of people in a League of Legends Facebook group, showing that they just reached plat and they cannot even spell properly, and I see that they were playing supp in an elo which is like 3 divisions lower, than platinum is pretty saddening for me. Also, the other day I was playing with this Zed who went 18/14, talking like a bronze and blaming his "noob team". I thought he's just probably like high silver who is duo-ing with his friend, but no. He was actually Gold 1, and looking at his match history, it was pretty obvious that he reached this rank by playing only duoQ with his friend who is way higher than he was. Sometimes I just think "yea boii gonna play a ranked hopefully i can get gold 2 today" but seeing these people who are far worse than me, but they are still in way better divisions is just saddening. I keep thinking "they will probably fall down, since the division they are in isn't the one they deserve" but the reality is that they won't fall down, since they will always have their duoQ partner Also it's insane that few years ago most people were in bronze. Literally only 20% of the players were Gold or higher But nowadays literally everyone is Gold. Few months ago it was very surprising when I was looking up 0/9 jungler-blamer players on op.gg, seeing they are Gold 5 0lp, but now I'm used to it.