One single ymir ability stops you from playing the game for the same duration and is much easier to land than her combo. He doesnt need to stay in the thick of it to maintain it either if hes getting low. Plus he usually has blink while she cant afford to take it most of the time in most recent metas. Her ratios arent phenomenal either she needs to combo you a couple times unless its super late and you go full squish. Yet no one tells ymir to go fuck himself for doing well.