He's wrong because his whole schtick is "people could choose to not be poor". The sky is purple in his world.
He's half right on that. Some people are truly victims of their circumstances, but some people are just plain lazy. I've got another relative who had the opportunity to go to college, but turned it down because "Degrees are so over-rated!" (translation: I'm too lazy for college). For the last 10 years, he's smoked dope, played a ton of video games, and worked at a few dead-end jobs. He is truly the victim of his own choices.