You are still making the same point as I made, for you information the only thing that is guaranteed in trading is lossing so this is the major reason why I highlighted lossing to be a common factor for traders.
As long as you're funding the chance of encountering loss is 90% to 10% even those who are masters in trading having their lossing day.
We can't mention trading without mentioning loss, and even if we have to mention profit it's lesser than the losses that we have to mention, but one thing is certain just like op said, stop chasing loses is the best way to avoid more loss because at that point you're encountering more emotional trade than usual.
Your 90% to 10% gain analogy doesn't fit this. There are factors that shift chances for getting profit or lost and this is why those who have mastered the act of trading have better win ratio than noob or below mastering.
Profit and loss cannot be ignore in any business and we cannot speak about one and ignore the other. But like Op said focusing on getting back losses will lead to more lost and potentially bankruptcy.