Capitalism is often touted as an "engine of wealth generation", but what is in fact measured in financial reports and national GDP accounts is not wealth but profit, revenues less costs, where both seek the advantage of ecnomic externalities (positive externalities for profits, negative externalities for costs) to maximise those profits. The foundations of economics of the firm (microeconomics) are found in cost-accounting, and cost-accounting itself was limited to the expenses and revenues that could be measured (theree's a version of Goodhart's Law buried in here somewhere). Alexander Hamilton Church is the father of modern cost-accounting and gives some interesting insights. (Yes, related to the othere A.H.)
GDP is a measure of cash flows, rather than actual increase in national capital, wealth, or well-being. (With some adjustments.)
Economic definitions of wealth differ, though Adam Smith's was "the annual labour and produce of the nation". In general, it is the notion of productive capability (labour, motive, or change power, effectively available energy) plus stored capital to use that energy, plus resources to act on, and sinks to exhaust to. (Industrial knowledge is a form of copital.)
NSO Group's activities and rhetoric are par for the course.