Best definition of humanism is defining good, but only forbidding evil. Everyone has the freedom to not maximize good, as long as they don’t hurt orhers. This is what is needed for ai. Otherwise it is just as oppressive as traditional media.

Surely, for hiring, best candidate rather than social work culture is ideal, but for private enterprise, maximizing non evil ( Say zionist or other supremacism,purity) cultural priorities might be important instead of technical prowess. University includion is good because it is a social experience instead of pure automaton factory.

While exclusion is evil, inclusion also may not choose best candidates and so is also evil. Inclusion is not the same as no exclusions.

In the end, nepotism is the grey area of humanism. Certainly, an employer can choose any bias they prefer. You can teach them that best candidate is best, but their freedom matters too. Buy american,/nationalism can have some merit in that what you buy directly improves lives of a tighter social group to you than the indirect flow of globalized profits into homes, exports, and national debt values. You can teach nepotism is bad for you, but you cannot morally force either in group or out group trade.