Knocking off Harrigan's mates sounds a lot like knocking off Dutch's squad.
Those situations are different.
It was slim pickings for human prey in the jungle. And the Jungle Hunter was not saving Dutch for last, based on the net trap scene. The Jungle Hunter was just plain hunting.
The City Hunter was following Harrigan through the city but not hunting him. Not killing him. The City Hunter followed Harrigan to seek out the people close to him and kill them, and leave Mike alive to suffer through it.
It all hinges on do you believe the Elder Predator would approve following someone, and slaying said someone's entire group of friends or family systematically just so said someone is forced to watch. It all hinges on would the Elder Predator approve the following of a prey to his place of mourning, not to hunt him, but just to mentally torture him.