> Following this line, most people are financial idiots, which means they are responsible for their poverty?
Your whole comment is conflating poor financial planning with actual poverty.
If you break people into: those legitimately without enough resources to get by, those who would have enough if they knew how to manage money, and those who have enough whether or not they can manage money; I would wager that the people with enough money but terrible planning skills would be the plurality, whether or not they were the outright majority.
Once you slip into the "I can afford this because I can make the monthly payments" line of thinking, you are pretty much by definition living at the cusp of your means. That's where most people are, whether or not it's a good idea for them to be.