While I do think wealth inequality is a big issue of our time, I don't think it is an issue of civilizational level disintegration -- that would look like the total amount of wealth in our society decreasing, which by all accounts doesn't seem to be happening.
While I'm far from rich, I have done well the last couple years after many years of being poor. But even when I was poor I looked around and saw lots of people who were wealthy and doing well, which I took as a general measure of how society was doing, instead of using my own situation or those in my immediate circle as a measure of that.
