I'll share a family story. My grandfather was born in Arkansas during the height of Jim Crow. He never went to school, and he never learned to read or write. He and his family moved to Bakersfield, CA in the 1950s as part of the Second Great Migration of African-Americans from the South, looking for better opportunities and to escape Jim Crow. He worked on a farm for over 30 years. Despite these challenges, he was able to purchase a modest home there, and he managed to pay off most of his mortgage debt before he was forced to retire. This would be very difficult for a farm worker today.
I have other grandparents who still faced racism but were literate, and they were able to purchase homes in places like San Luis Obispo County back in the 1960s. Now, I wouldn't want to trade places with my grandparents; I'm glad that I was born after the Civil Rights Movement. I'm fortunate to have many opportunities that my grandparents and my parents didn't have. But today's housing prices are one of the most formidable challenges facing my generation. It seems that opportunity in America (and around the world) is increasingly being concentrated in a handful of "winner" cities, and the demand to live in these cities, combined with a reluctance or even unwillingness to grow to meet the demand, has caused housing prices to skyrocket. But moving outside these cities means running the risk of having few opportunities; witness the chronically higher-than-average unemployment rate of the Central Valley of California, and witness the Rust Belt.
Meanwhile my cousins who are currently in their mid 20s are mostly jobless and still live with their parents.
And yes, relative poverty matters greatly, but absolute poverty is a real thing even in the US. In 1964, the US launched the war on poverty, and poverty declined. Since the 1980s, some of that progress was reversed, but it's still far better than 1964. (And poverty now is relative, and includes very little literal starvation. That certainly wasn't true in the US in 1964, much less earlier - especially before WWII.