Are you sure?
From the data I’ve seen the bottom decile Americans consume significantly more per capita compared to even 2006.
e.g. plane travel was completely absent amongst the bottom decile in 2006, like so close to zero mileage per capita per annum it was a rounding error.
Yes actually, this is remarkably well studied:
https://www.pewresearch.org/short-reads/2018/08/07/for-most-...
I hate to imagine what this graph looks like today, given the massive amount of inflation that's happened in the last 6 years.
Plane travel is a very poor proxy for quality of life.
Home ownership, high-quality food, working hours etc. seem far more relevant.
Is bottom decile consumption a good measure of economic health? In a way it seems it could signal the opposite, ie in the past the bottom decile was saving that money in an effort to change their economic conditions vs spending it now could indicate a lack of hope for upward mobility.
To your example it seems worth noting that the quality of the air travel experience appears to decline over time as well.