One of the arguments for reparations is the idea that the United states benefited greatly in the form of all that free labor in the form of slavery for a literal century or so.
You see this also some management practices where management tries to lock and trap people into a low wage working situation, the "company town" for example.
Thus there are advantages, but usually only for the people in control.
I don't accept that excuse for reparations.
Anyone that has a valid claim for reparations, is dead already. Nobody alive today was an American slave, and everyone alive today benefits from the past. Not just white people.
Nobody owes anyone anything based on pigmentation alone.
In the context they asked the question, it does seem stupid. I don't see how there is any positive aspect of slavery from the point of view of someone who is a slave.
On the other hand, it does highlight a problem with looking at topics in modern history from certain perspectives. In the same way that one could argue that Germany's role in WW2 had some positive after effects for Europe and the rest of the world, or that the dropping of the bombs on Japan by the US was potentially a better outcome than a few more years of war, arguments could probably made that slavery throughout history has also had some positives. It's just too recent and controversial for it to be discussed from a removed perspective.