I assure you that poor people have always been focused on money. Every time the rent is due, they are very aware. It's the wealthier folks who have historically had the privilege of being Bogleheads and ignore having to think about the financial implications of every decision they make.

Lower-income families have traditionally had community institutions to support them. You could be a church member for free, hang out at the union hall, or participate in any number of IRL activities that let you quit thinking about cashflow for a few blessed hours.

Replacing community engagement with an obsession over cash isn't healthy, either for individuals or communities.