Robin’s vision is actually far, far worse than the ordinary Repugnant Conclusion because it doesn’t necessarily preserve or even increase total net utility. You do end up with huge numbers of people with lives barely worth living, but they are only a tiny fraction of the people you’d end up with under the ordinary Repugnant Conclusion (which implies free resources sufficient to bring newly created people up to worth living level) given the same starting point.
Robin’s vision is actually far, far worse than the ordinary Repugnant Conclusion because it doesn’t necessarily preserve or even increase total net utility. You do end up with huge numbers of people with lives barely worth living, but they are only a tiny fraction of the people you’d end up with under the ordinary Repugnant Conclusion (which implies free resources sufficient to bring newly created people up to worth living level) given the same starting point.