As a general principle I don't credit that kind of statement by that kind of person. This is because every time I've looked into one of them in depth it was very misleading. That kind of rich person generally misunderstands the question and misses significant support.

Edit: For example, while he did work on a farm to pay for college that farm was owned by his Mom's cousin. Working for family is generally a significant advantage.

Edit2: Having a wealthy childhood has enduring benefits even if the money doesn't last. For example, it significantly increased his chance of having access to a computer at age 12, which probably had an enduring impact on his coding skills.

I'm not saying that means he didn't work hard and isn't smart. I am saying that it's telling he thinks that kind of thing didn't also contribute.