"Real median middle class income has stayed effectively constant since the 1980s"
That's the entire point that was being made in the first place! Productivity has increased massively, income has "stayed constant" - So, we're working harder and producing more for the sole benefit of the rich.
Sure. Let's take 20 years.
Healthcare outcomes are worse. Healthcare is more expensive. Life expectancy is lower. Fewer people can afford to buy a home. Fewer people can afford to retire. Commutes are longer. People have to work more hours in a week to get by. A higher percentage of people are living paycheck to paycheck. Infrastructure is collapsing. Towns are in more debt. Higher education is VASTLY more expensive. Literacy rates have decreased. A vastly higher percentage of people work two jobs to make ends meet A vastly higher percentage of households require two working adults, rather than one working adult, to pay bills.
But sure go off about how it's so great we have the Apple Vision Pro now.