1) After adjusting for inflation, wages have fallen and rents have increased. They've been increasing at a pace of roughly 3% above inflation/year: https://www.cbpp.org/blog/new-census-data-show-rising-rents-...
Additionally, people aren't saving money like they use to. In fact, the savings rate is currently the lowest its been...ever: https://fred.stlouisfed.org/series/PSAVERT
This is made obvious by the fact that the amount of actual dollars Americans have saved is also at the lowest point in history: https://www.creditdonkey.com/average-american-savings-statis...
Not sure what you're trying to show with your charts. Real DPI is merely a measure of dollars left over after taxes. Several issues with the Real DPI measurement: 1) it tells you nothing about the median household. 2) The inflation adjustments are optimistic -- who honestly believes inflation is less than 2%. 3) It doesn't change the fact that most of that after-tax income is going straight to either housing or healthcare.
Where in that link does it say per year? The text and the chart show a 4% rise above inflation total from 2007 to 2015. That rate of rise is in line with the numbers from last year[1] that show housing as a whole rose somewhere between 0.5% and 1% more than overall inflation.
[1] https://www.bls.gov/opub/ted/2018/mobile/consumer-price-inde...
The median consumer has real impact even as the wealthy consumers have an ever larger impact on the averages.
Consider housing, people that make 10x as much rarely spend 10x as much on their home as excess becomes useless. Similarly, some people spend a lot of disposable income on clothing, but plenty of rich people don't care about clothing and spend relatively little.
You'll need to support your claims about the second item. Saying it, does not make it so.
Real disposable income is at an all-time high. Personal consumption expenditures are at an all-time high.
https://fred.stlouisfed.org/series/PCE
https://fred.stlouisfed.org/series/DSPIC96
Americans are also spending less each year on soda. It's not because incomes are plunging 7% per year and they can't afford Coca Cola.