Well this seems pretty easy to check, has inflation adjusted median household income also gone up by 50% during this period of 50% GDP growth?
It turns out it hasn't, it's only gone up by 25%. Which is clearly better than zero, but definitely not the expected amount.
But I'd add one more item, housing costs have skyrocketed during that time. And while overall inflation has gone up notably, I believe housing costs have gone up more - and I wouldn't be surprised if most of those gains in income have been eaten up by having to pay higher housing costs. So all in all possibly no net gain.
It turns out it hasn't, it's only gone up by 25%. Which is clearly better than zero, but definitely not the expected amount.
But I'd add one more item, housing costs have skyrocketed during that time. And while overall inflation has gone up notably, I believe housing costs have gone up more - and I wouldn't be surprised if most of those gains in income have been eaten up by having to pay higher housing costs. So all in all possibly no net gain.
[1] - https://fred.stlouisfed.org/series/MEHOINUSA672N