I think this is incredibly disingenuous. A steady state population that lives within the means of what the sun and planet can provide, without exceeding planetary boundaries, is an ambitious yet reasonable goal. A planet with a population that must grow forever to pay off debt today incurs against tomorrow without tomorrow's consent is simply not realistic, a "spherical cow."
When women are empowered and have agency, they delay having children and have less children. What does this tell us? It tells us that the global population boom was driven by lack of agency and contraceptive access for women. What did most socioeconomic systems do with this "demographic dividend"? Capitalism, leading to wealth inequality, and also incurring substantial debts to pay for the future (both financial and physical system). And now this system is in material structural peril.
So, should we listen to the pro-natalism harpies that everyone should have more kids to continue to allow a suboptimal economic system predicated on returns and debt to continue to trudge on unimpeded? Or should we continue to empower women and force the economic systems to serve humans instead of using them as a resource? Managing a rapid total fertility rate decline resulting from self determination of a population cohort isn't giving up; it is living within our means as a species and respecting human rights.