Making it the mother's decision alone would work if it were the kid that didn't accept, but what if it were the mother that didn't accept?
Didn't accept her own sole decision?
I can see your point about one person making it easier.
I didn't say it made it "easier". I said it solves more problems than it creates.
However, I don't think making it easier is the best reason for this. If anything, this should be a hard process to ensure that the kid is being emancipated at the right time. Furthermore, the two person system works to prevent the opposite that you are trying to prevent.
I am confused. Shouldn't I be opposed to a system that is the oppposite of my favored one?
It seems you are worried about one parent holding up the process, because they don't think the kid is ready. That is not always a bad thing, though. It is not hard to see situtations where the kid is begging to be released, and the one parent holding that over the other's head that they alone can do it at any time.
What is the bad consequence in your scenario? What would the wife be trying to force the father to do? "Buy me a fur or I'll liberate my son!"