Your link:
"Net worth tends to have an even more extreme spread than income does.
"While many households in the United States have
zero or
negative net worth, the same statement isn't valid for income.
"Household income also reflects transfer payments, while the government isn't (really) in the business of transferring wealth."
Household income Gini Index U.S. 2021 | Statista.
View attachment 726390
US Gini household income distribution from 1990 to 2021 ranks a country from 0% (perfectly equal) to 100% (perfectly unequal).
It was 0.43 in 1992 and is currently 0.49.
The fundamental notion of American capitalism or exceptionalism was the production of a huge middle class.
Many people suspect the 41.4% jump in the Gini over the last decade and the rising level of consumer debt have been at least partially responsible for the loss of that greatest middle class in history.
10 Years Ago: Wealth & Income Inequality Analysis from Richard Wolff