Remember when Velen realized that Rakeesh was his son and he started bonking your head to try to make you stop killing him?
How many other Rakeeshs do you think exist out there somewhere? Kids that were too young or weren’t even born yet to make a decision when the Eredar made their pact with Sargeras?
Don’t you think Velen would try to redeem those people, perhaps out of guilt for his failure to protect his son?
https://wow.zamimg.com/uploads/screenshots/normal/563300-high-general-rakeesh-a-grieving-velen-cradles-the-corpse-of-his-son.jpg