If we value the ability to experience consciousness ourselves, then surely the fact that 7 billion people exist is valuable in and of itself?
For that matter, the whole point of the primitivist argument is that humans have been quite happy about living in extreme physical deprivation for most of their history. It's only when the social milieu is totally FUBAR that "poverty" as we know it becomes a cause of deep unhappiness and dysfunction. Also as the OP shows, people can also be quite unhappy with their life despite living in a highly developed country and enjoying quite a bit of material wealth.
Citation desperately needed.