I'd say it depends on the circumstances that brought about the old ways, as well. [It's only in this new life that Lexa can realize how wrong her people were about so many things, and it starts with the Flame that lies in her body. She knows that it's proof that they knew so little, and that they let themselves get caught up in so much.]

Regardless, you're correct. That's if we still have people to return to. There is a chance that we may be wrong about that.