Anyway, the idea that personal consumption has no use is absurd. It portrays a false idea that these pipes and factories and what not are made for the personal use of the affluent when in fact all these machinery produce items demanded by the masses. That's why the owners are rich, they produce(facilitate could be a better word) the stuff we want and we give them money to receive the output. Obviously, reducing personal consumption or making choices directly reduces the output of the machinery of the rich.
If you want to blame a class, you are better off blaming private jets, mega yacht and golf courses if you are after the rich. These are the only emissions that are significantly different from the rest.
Then you come to transportation and large homes of the middle class in western countries, especially the USA.