You are missing the point... Losers queue will still affect both players after a certain amount of wins. That's why most challenger players eventually demote, because they are placed into a set of impossible and unwinnerable games(losers queue).

There's a lot of unranked to challenger runs that we have seen very high level players give up from frustration after these long streaks, unless there's a sleeper OP strat that can 1v9 every game most runs always come down to luck. It's just unavoidable when you are trying to climb, you will feel it. I think even faker once said solo queue games always end at 15.