No it isn’t, it is literally nonsense. There is no such thing as “reverse nepotism”.
Yes but he didn’t say reverse nepotism he said reverse nepobaby as it wasn’t the parent getting the child a job but the other way round. It’s still nepotism but nepobaby is a more specific term.
The vast majority of the time, nepotism refers to a patent giving their children special privileges due to the power the parent has.
The word itself comes from from the Italian word for “nephew”, because of a trend of “nephews” of popes getting special privileges (often, these were the popes’ illegitimate sons).