I call B/S. I know low income people who live extremely frugal to save their 20% to buy their house. So it’s very doable if you put your mind to it. It won’t be as easy as if you make more money obviously, but it’s still doable. If they don’t have the will power and the discipline to save up that 20%, they shouldn’t be buying anyways. Easy money is what got us into this mess.
High-income people can live frugal too. It’s one thing to make 3500/month after-tax and save 500/month, it’s another to make 7500/month and save 4500/month with the same standard of living.