Dragon being confirmed as a marine in the past gives context to Akainu’s absolute justice, since they apparently had a relationship with the way he referred to Luffy as “Dragon’s son“ so the betrayal hit harder. He can’t spare any traitors or let a potential threat leave due to the potential of birthing another Dragon.
Its also interesting how the only people who escaped him are Kuma and Bonney, who are related to the Revs.
Akainu vs Dragon is shaping up to be pretty legit