Maybe you're right; I'm not contributing much by criticizing the stupidest sentence in an article that isn't very rigorous to begin with. But it's here, and people are looking at it and talking about it, it doesn't seem helpful to ignore it either. I wouldn't mind seeing this sentiment expressed quite a bit more often. It was stated, and disputed, in a more serious, wall-of-text post that got two shares. I think people see inequality as harmful because "The rich get richer and the poor get poorer." Evidence and casual observation show that this is generally false; the poor get richer too. So your claim that "when wealth becomes too concentrated that dynamism is limited" sounds like a vague restatement: when inequality grows the rich get more dynamism and the poor get less dynamism. Saying "the spending power of the middle class is limited" suggests that individual members of the middle class have less power to spend when inequality grows. Can you back this up?inequality per se isn't a bad thing