Reminder that Shanks, a Pirate, was the only reason that Koby wasn't executed by Akainu at Marineford.
If it wasn't a for a Yonko, the same man that inspired Garp's grandson to rebel and become a pirate, making his will known against the wishes of the world gover, Garp's prized protege would have been magmafisted for insubordination and Garp could do NOTHING to stop it. He would stand there like a good cuck as Koby screams and the light of life leaves his eye, just like he did with Ace