Assuming that someone acquired their money legally- that individual should also be entitled to enjoy their money. I don't get that dude's logic so does he think that people should only use money to provide for their bare necessities and the give the rest away to charity or what ? If the whole world functioned like that, motivation for success would be drastically reduced...
It isn't just the motivation for success, it is the market for the early adoption of much of technology, that has to be brought into being before everyone can have it. For instance, I held off on getting a computer until the 486 chips were available with math coprocessor built in for my CAD. That computer cost me nearly 4K. Today the vast majority of the earth's population has access to a super computer and the cost is rapidly dropping to zero. Moore's law no longer applies to computing as in 2017 the computing cost per dollar went on the vertical axis of the exponential curve and is rising at a nearly infinite rate. Or so says Ray Kurzweil. Thank the rich who incubated the process.
Over the last 100 years plus, the US and several other advanced nations have largely incubated all the technology, and in particular drug technology the world has seen. And starvation has essentially been wiped out in the last 10 years aside from warzones and failed states.
That said inequality is still a problem. It would be unwise to choose it as a good if two identical futures differed only in the degree of inequality. Also the fact that liberty exist, and that it drives progress doesn't justify the inane uses some people make of it. Though the connection of things is not always as clear as one would like to believe.