Something I did just realise from the BFA scenario itself is that when asked about the Ogre clans Grommash describes how the Mag’har subjugated them all.
" We subdued the ogre clans long ago. But every so often, one of their bravest–and stupidest–stirs the embers of rebellion. Today is such a day.
You and Eitrigg will join Geya’rah in putting down the ogre uprising. Prove yourself in battle and you may earn her respect."
Please go and kill this Ogre who doesn’t want his people to [reads notes] continue being subjugated servants of the Mag’har?