A popular take, but utterly wrong. Goblins aren't the victims, they are the perps. It's not humans who pick on goblins, it's goblins who target humans. It's not humans who can't live with goblins, it's goblins who rove off of humans. It's like blaming the sheep for shunning the wolf. It's humans who fear goblins, not the other way around.
I dunno ... I bet there isnt as much Goblin Heroes who would travel to Human Village and slaughter those dangerous Humans ... As there is Human Heroes who would travel to Goblin Village (tribe?) and slaugher those dangerous Goblins ...
Because it's not a thing goblin heroes do, it's a thing the average goblin does. Whereas humans need help from exceptional people to protect themselves.