True, but it's still not as much as it should be. The fact that 40% of people don't have $400 for an emergency is a big problem.
We also have to be careful with statistics relating to "disposable income," since it can be defined subjectively.
And the wealth gap hasn't been this bad since the thirties.
We have greater wealth today than we had in the thirties. That is a simple fact. We are far more productive and have far more free time than we had in the thirties.
I am still trying to understand what is this "liberal Socialism" you speak of is and How it would be better?