Just to preface - I am not a capitalist. I believe in degrowth and communalism. With that in mind, if we just start dropping our numbers at this rate any system we have will collapse. There is no way for human societies to work if the vast majority of its demographic are the elderly.
We are not doing “the planet” any favors by launching a civilizational collapse. Planned degrowth is not only better, it is literary the only way forward.