Also, the choice of timeline is very suspicious. Pegging the start of the graphs at the end of the Great Depression / WWII skews the graph, as does omitting the context of the 19th and early 20th centuries.
This is more about chart-junk supporting a pre-conceived narrative than anything else.
I don't see where the article claims otherwise.
That said, the point is pedantic: if the share of income in a group gets smaller over time, their purchasing power goes down correspondingly as well. The overall size of the pie matters only to economists.
"Also, the choice of timeline is very suspicious. Pegging the start of the graphs at the end of the Great Depression / WWII skews the graph, as does omitting the context of the 19th and early 20th centuries. This is more about chart-junk supporting a pre-conceived narrative than anything else."
And not including the civil war skews the graph as well. Or the depression of 1893. You can always find an argument like that to justify not believing something that you choose not to believe. Calling it "chart junk" is just exaggeration.
But, real wages for the lower 80% have actually been falling since the 1980s. So they're not doing so great, actually.
What do you mean by that? I don't see that supported by any evidence whatsoever. If a particular quintile has a smaller share of total income and yet are able to buy exactly the same products, exactly the same services, and exactly the same housing with their income then how is their purchasing power diminished?
Indeed, in actuality people are able to buy better products and services for their money. The "poor" today have cable TV, computers, and cellphones.
Except, they can't, on any objective basis. You're overlooking inflation when it's inconvenient to your argument, and using it as a bludgeon when it is. Price declines in consumer electronics are meaningless when the cost of energy and food and housing and education goes up steadily over time, often at rates higher than inflation.
Following your logic to it's end, it'll be fine and dandy if the richest 1% accumulates 99.99% of the wealth and the poor can't afford buy vegetables or homes, just as long as the last .01% of wealth lets them buy televisions (or whatever mass-produced gee-gaw is cheaply produced in 2050).
Guess what? That's still an increase in inequality.
It's also worth noting that "the rich," "the poor," "the uninsured," etc., are not constant groups over time.