> It means the rich can get richer without the poor getting poorer since they are creating wealth, not taking it in a zero-sum or rent-seeking way.
Except outside of the most abject poverty that is fairly rare in the developed world, utility/disutility is more a function of relative economic status than absolute economic status. So, in the only sense that matters, this is at least oversimplified; you have to improve absolute wealth on the lower end considerably just to offset the disutility of increased equality and break even. It is possible to increase inequality and have everyone better off in utilitarian terms, but improvements in the usual economic measures are not sufficient to show that because those are poor proxies for utility.
Except outside of the most abject poverty that is fairly rare in the developed world, utility/disutility is more a function of relative economic status than absolute economic status. So, in the only sense that matters, this is at least oversimplified; you have to improve absolute wealth on the lower end considerably just to offset the disutility of increased equality and break even. It is possible to increase inequality and have everyone better off in utilitarian terms, but improvements in the usual economic measures are not sufficient to show that because those are poor proxies for utility.