Frequently "poor people who became rich" stories leave out important details (e.g. the definition of 'poor' is pretty loose, an extraordinary overlap of luck and timing, etc.). That isn't to discount the actual "poor became rich" stories that are completely 'legitimate.' They exist.

But pointing them out as examples to diminish the importance of socioeconomic conditions impact on a person's choices is like holding up any statistical outlier as proof that the statistics are 'wrong.'