I don't think that is true. Even if you exclude management jobs, hourly wages have remained roughly steady in real terms since the 1960's: http://www.pewresearch.org/fact-tank/2018/08/07/for-most-us-...
There are also longitudinal effects at play: native-born Americans have seen their wages rise but this is offset by immigrants who generally have lower-than-average wages (but still higher than in the country they emigrated from). Both groups are better off even though average wages haven't changed.
Both of these things are pretty important - college education can be life altering in terms of career trajectory, and owning a house is an entry point into the wealth ladder and also simply an escape from rent. In real terms, the cost of these has runaway over the past 20-30 years and so people's access to two crucial things that aid social mobility (wealth/housing and education) have been eroding over the years. But apparently because our money can still buy a basket of goods we should be satisfied that our lives haven't gotten any worse.
For me, and I'm pretty sure it's quite complex and I am guilty of Dunning Kruger wrt politics and economics, I simply cannot understand how inflation can get away without finding a way of placing these in the basket of goods used to calculate inflation.
[1] https://nces.ed.gov/fastfacts/display.asp?id=76
[2] https://www.reuters.com/article/us-usa-property-poll/u-s-hou...