According to them, the actual "degrowth" has to happen in the global north where economies are over-saturated [0]:
> We live in a world where poverty remains and those with unmet needs require more resources to satisfy them. We also live in an ecologically-constrained world struggling to cut emissions as fast as possible. In that context, by reducing consumption in the global North (and more generally for all of those who are over-consuming), one could free some of these resources for the people who need it the most. Ensuring basic needs and well-being for all necessarily implies limiting consumption in high-income regions and wealthy households in order to enable resource-poor countries and households to reach decent standards of living. In other words, degrowth in the global North is a prerequisite for sustainable development in the global South.
[0]: https://timotheeparrique.com/sufficiency-means-degrowth/
The question doesn't really matter. Whether we want it or not, economics will ultimately be subject to the laws of physics. We cannot sustain infinite growth on a planet with finite resources and carrying capacity. We've known this as far back as 1966 when Kenneth Boulding touched on these ideas in his essay "The Economics of the Coming Spaceship Earth" [0].
Holding the global north accountable for their footprint is to me one of sanest and most civilized pathways considering the ensuing implications of alternative scenarios.
[0] http://arachnid.biosci.utexas.edu/courses/THOC/Readings/Boul...