That's a ridiculous article. It conveniently avoids overall GDP, by which the US is the richest in the world.
In the first comparison they use GDP per capita, and in the second they use overall reserve currency? Then they use natural resources, but don't factor overall ability to exploit said resources. They're just picking metrics that don't favor the US.
But when we're talking about redistribution to individuals, GDP is a less good metric than GDP per capita.
I agree that it dances around GDP, but I disagree that it is somehow the trump metric that makes everything work. On balance, we have less cash per resident than do countries with higher per capita GDP.
In the first comparison they use GDP per capita, and in the second they use overall reserve currency? Then they use natural resources, but don't factor overall ability to exploit said resources. They're just picking metrics that don't favor the US.