You're so keen to prove your own point that you often don't hear what the other person is saying, particularly when you perceive them to be on the "other side".
People whose lives are shit should want to change their lives in whatever way they see fit. Changing an economic system seems a particularly impractical response to it, but it may well be effective. Or they may not care at all about it being effective, and they just care about the principles. I tend to find more of the latter than the former, but I don't spend my time immersed in that bubble like yourself so I wouldn't know.
There are many people that have a legitimate belief that their lives are shit. There are many other people who have worse lives than their parents, but better lives than their grandparents, and yet think their life is utter misery. That to me is not a particularly useful perspective to take, for the individual or the society they live in. And it doesn't seem that difficult to change your perspective, personally. Not having as good a life as your parents is not a disaster. Not having a home by your mid 30s is not a tragedy. It's just difficult, like most of our grandparents experienced - and in many cases worse. They had some things we don't have, don't have many things we do have, and have lived through situations much more traumatic.