Oh, it gets worse.
Don’t look up what blessing Gruumsh’s wife gave to the orcs.
Tried looking that up but can’t really find anything, what is the controversy there?
I guess you do need some background information, especially because Wizards sure doesn’t like spelling it out anymore.
In older editions it was assumed nearly all half-orcs were the offspring of rape, and “the blessing of Luthic” was given to make orcs fertile with nearly every other race.
The implications were clear, even more once you start diving into things like orcish society being a rigid patriarchy with a slave economy and one of Luthic’s domains being not just servitude, but specifically female servitude.