I think you misunderstood the original point. The idea is that there is more to life than consumption. Even if a higher extraction results in more consumption,

I think you misunderstood the original point. The idea is that there is more to life than consumption. Even if a higher extraction results in more consumption, that doesn't mean the end result is more valuable to the people. When you remove the assumption that more consumption equals more value to the consumer, then it doesn'tatter whether the value "leaves the system" or not.