"Sharing the heritage," sounds very nice, but the Orcs present couldn't smile.
The Beast God's legacy, is not a secret to all races. It is because of the presence of the Land of Inheritance that the Orc Empire has been able to pass down its culture from generation to generation.
Otherwise, given the self-destructive tendencies of the Orcs, cultural regression is only a matter of time. For instance, now, due to our ancestors' frequent misdeeds, various heritages have become incomplete.
Across the continent, powerful forces have successively produced Sanctuary Powerhouses, yet only the Orc Empire remains vacant.
If this continues, either a prodigy must complete the heritage, or it will gradually decline amidst competition.
Undoubtedly, completing the racial cultivation heritage requires a massive reserve of knowledge.
In the Human Race, this wouldn't be an issue at all. Secluding oneself in an academy would grant access to vast amounts of knowledge.