I agree with this. Consumerism is a great source of contamination for the human mind. There are many sad things in the world, and as someone with depression I know all too well the sinking deadening feeling of pointlessness, but there are also many wonderful things that make it worth living I've grown to appreciate.
I think that a certain sort of consumerism is innate to human beings and is fine but commercial interest ramp it up and make it chronic. This can be awful if you have means and a measure of insight about it. Although there's a great mass of people who dont and they're really vulnerable to the messages and manipulation of the same trends. They get consequences themselves and so does everyone else because no one really suffers in splendid isolation.
This isnt a criticism of capitalism per se as I think socialists, communists, fascists, pretty much any ideology, has in some way promised people something in the same order of things or of a similar trend, there's no disagreement about the goal of seeking more and more, just the essential means to that end.