No, it's the most unbelievably hamfisted anti-abortion, utilitarian ethic screed I've ever seen, poorly disguised as your standard YA dystopian fic.

Unwinding is, in universe, the process of completely taking someone apart and using all their pieces as medical transplants for others, and parents can choose to have their kids unwound up until the age of 16 or something for any reason. It's the trolley problem variation where the surgeon kills one person for their organs to save five that need transplants.