Being a low skill player playing exclusively with and against other low skill players sucks. Imagine playing doubles tennis where all four players hit the ball directly into the net 80% of the time. Win or lose it would be an unpleasant experience. I think that's the root of many people's frustration with ranked matchmaking in e-sports games.

I mentioned this in another comment, but I think if e-sports wants to become truly culturally significant the games will need to figure out how to more elegantly bridge the gap between ranked and unranked play, and how to make it fun to play at low skill levels. I don't think it's a coincidence that Fortnite has done both.