Is Riot really okay with 90% of games at Diamond being decided by the first 5 minutes or picks?
This really isn't fun. Almost every single game is either over in the first 5 minutes because at least 2/3 lanes on one team are losing hard, or if everyone plays well in the early game, it comes entirely down to which team has a better composition.
There's no middle ground. Skill becomes largely irrelevant if the game isn't over early, which it more often than not is.