I think the point he makes in the middle is a good one, even if he oversimplifies capitalism's claims. Increasing market utility under capitalism says nothing about increasing the quality of life of the market agents - it says nothing on the role of happiness or quality of life in a free market. And you can see many instances of (especially deregulated) capitalism spin out profound and unethical unhappiness (e.g., the US meatpacking industry in the early 20th century). The point he is raising is that there is an essential disconnect between the things that we as human beings care about (eg, quality of life, improving the world, raising families, aesthetic pleasures, knowledge) and what agents in capitalism care about (eg, profit).

As for the conclusion, I agree he does sort of get in the weeds a bit (what kind of education does he see as training consumers? I never took a class on that...). But he seems to be getting at the idea that part of the role of education in capitalism is empowering free agents to make ethical, informed purchasing decisions so that the free market veers toward good. If we aren't educated on broad topics and don't have autonomous free thinking, we might not believe in global warming and therefore not create a market for electric cars; or we not care about the ethical treatment of animals, so disregard organics and keep our cheaper Tyson products.