While we are all black so we are all impacted by racism to varying degrees,
there are some problems that impact upper class black people more than middle-lower class black people
but because the black people who work in media, write for television shows, work in news are generally upper class,
the problems that impact upper class black people sometimes can get a disproportionate amount of attention.
"Black Nepotism is good" is using the sympathy non-black americans may feel about racism, to disproportionately benefit upper class black americans.
The only black americans who can benefit from "black nepotism" are by definition upper class. and they are justifying this benefit by appealing to universal anti black racism.
Seems to be a much better use of that sympathy is to lobby for practices that benefit black people more broadly.
Sympathy is not unlimited and imo wasting it on something as self evidently stupid as "Black Nepotism is good actually"
is transparently cynical and self interested move by rich black people who want pass nepotistic benefits on to their kids without scrutiny or criticism.