No, you're simply misinformed likely due to widespread propaganda online. In the US the average worker makes about 10% more than 50 years ago. [1] And this is despite a massive outsourcing headwind of globalization that has made non-Americans vastly richer on average and pulled billions out of poverty globally. [2]
Inflation needs error bars. A small bias in how inflation is measured, over a long period of time, would create substantially different results. I personally don't doubt that we have more buying power, but we have basically just created better addictions that we waste that buying power on.
[1] https://fred.stlouisfed.org/series/LES1252881600Q [2] https://www.macrotrends.net/global-metrics/countries/wld/wor...