Do not mistake economic indicators such as GDP or "growth" for meaningful measures of economic health.
I think it’s not perfect but probably the best we have. People forgot or simply don’t realize how much worse life was just a couple of decades ago (in terms of nutrition, access to knowledge, clean water, material wealth).
A lot of people in the world are angry and one of the things that fuels this anger is the "gaslighting" that the data shows their lives are better while their lived reality is the opposite.
Don't forget that Millennials are the first generation to be poorer than their parents in a long time...