As a solo player I honestly don’t mind facing duos, but I wish I didn’t have to manually check this every game on a 3rd party site like porofessor. This has become a golden rule for me, so I don’t get surprised by unexpected / weird attention from enemy support or jungle.
They admit that it’s a slightly unfair advantage an even puts duos into higher mmr lobbies, but at least be transparent and indicate this to everyone in the game.
There should be an icon on someone’s loading screen portrait if they have above a certain % of ranked games played as duoQ. It would let everyone know that they are a social player =)