That chart is worthless without an inflation adjustment. A dollar back in 1945 bought much more than a dollar today.
The chart is % of GDP, not dollars. It compares the debt to the size of the economy.
You don’t know squat about economics. Nada. Zip. Zilch.
Read. The. Chart.
Percent of GDP has NOTHING to do with the value of the dollar. Specifically, the chart addresses ABILITY TO PAY. We had damned high taxes in the post war period so as to pay down the debt. That harmed economic growth. The good news is we got through it - for a lot of reasons, not the least of which is that we sold a lot of stuff to other countries whose factories were destroyed.
Au contraire. The chart is expressed in percent of GDP, not in dollars. It is thus inherently adjusted for inflation.