It does not sound grounded in reality as well.
This. The lower end of those "upper middle class" numbers may qualify for welfare in some tech hub cities.
They do point out that it varies by location, but really their number range is terrible. "classified a family of three earning $133,000 to $400,000 in 2024 dollars as upper middle class." From the HUD Section 8 income limits, expensive places the lower end of that is considered low income, like San Jose 143,600 qualifies for Section 8, versus cities like Akron where 72,250 is low enough to qualify. Location, location, location.
As this is /. lots of us live in tech hubs that even though we don't like the costs, they're very expensive places to live. In my current city despite being a full hour commute from the city center 130K is still solidly middle class. Not poverty, but not upper crust either. That income wouldn't require a trailer park, but would have a hard time affording a 3 bedroom / 2 bath home (they'd add another 45+ minutes to the commute distance), one or possibly two small vacations per year.
In tech hubs especially, those household incomes can be very middle class, not upper-middle, and in some places, lower class lifestyles.