You are just wrong. Absolute numbers are not relevant when discussing trends because, guess what, the population of the whole world has increased in the last 70 years. Shocking news!

Povery rates are approximately half of what it was in 1958, when the Census bureau began tracking data. The rate bottomed out in 2019 but then went back up in 2020 (bet you can guess why), and is now trending down again.

https://www.debt.org/faqs/americans-in-debt/poverty-united-states/