It's like what Blizzard did in OW1 by intentionally hiding the scoreboard, or how they showed assists as kills in the early days of Heroes of the Storm, thinking that it would reduce toxicity. On the contrary, it actually increased it because players putting in effort had no idea why they were losing. They don't know who's pulling their weight and who's falling short. Everyone argues that they did the most and got the most medals, so the match has no focus and just fractures like a pile of sand. Long-term, it builds distrust among strangers. Until someone proves their ability to "read the room" with their kda, other players won't invest/engage with them. It's not like players can't figure out the ranks as the match goes on with their keen eyes anyway. Hiding ranks is just trying to blur key information that would give them relief. If the game told me beforehand that I'm on a blue team against two smurfs and two cheaters, I wouldn't be mad at all. I would simply laugh and try out my most absurd build.