Which part of this quote is untrue? That it's not worded tastefully is a different matter.
I'm at the top 10% income earners in a wealthy country and I don't feel think I've necessarily earned it more than the other 90% of the population. I lucked out. I had loving parents that guided me and pushed me to have an education. I don't suffer from any mental or physical disease. Seriously, going to school to get a degree and learning on my own how to build software systems, that's the easy part and wouldn't have been possible if I didn't have the luck of being born in the right social circumstances and with the right biology traits (health and smarts).
If one's own parents labored and suffered to create value and provide for their child, does that child not deserve to enjoy the fruits of that labor? If that child honors their parents by continuing a tradition of hard work, albeit more comfortably, why does he need to feel ashamed of his success? At which generation do we disinherit the sacrifices of those who came before us?
There's a difference between not feeling ashamed and feeling entitled to it and superior to the others that didn't inherit those fruits.
He also earned being called a nitwit.