Inflation adjustments are tricky because it’s not really obvious how to measure inflation. But even adjusted for CPI inflation personal consumption expenditures have been steadily increasing in the 20th century: https://alfred.stlouisfed.org/series?seid=A794RX0Q048SBEA
Tangent 1: Placeholder: I don't agree that consumption metrics are better.
Tangent 2: Rich people do consume (colloquially speaking) proportionally to their increased wealth, but after sating their material desires they turn to financial assets: dibs on passive income and future growth. More for them does mean less for everyone else. Both in the first-order sense of owning more shares and in the second-order sense of being on the winning side of prevailing trends in globalization, automation, tax law, and corruption.
In the United States, it's a different story. The tide is rising, but most boats have not been rising with the tides for about 40 years, and that's troubling.
https://www.epi.org/publication/swa-wages-2019/
The figure you linked does not indicate adjustment for inflation and does not segment expenditures by wealth, which is important, because the US economy as a whole is growing, but more than 100% of the growth is flowing to the top. The rich get richer, the poor (and middle class) get poorer. You have to segment by income to see this trend.