It's not agency for the individual, it's agency *for everyone*. The goal is to improve the agency of all. But the purpose is still about agency, so you *do* care about individuals, in that the entire point is that a person is able to be and define their best selves. So there's a push-pull effect.
It's imperfect, but it's how I think about things. It's just one lens of many, but it's the main one I think about things through, in terms of ethics.