Fujitora, a civilian that was drafted into the Marines only tow years ago, did more than Garp did in over five decades to change the rotten system via abolishing the Warlords.
No shock to me that Koby is just like his mentor and still seaks to capture Luffy cause "muh Pirates evil"
He literally went to an island/country of the formerly enslaved woman to capture her for his Celestial Dragon Masters.
Fuji (and arguably Smoker) are literally the only hope the Marines have for change.
Koby as he is portrayed now? At the end of One Piece would be just another Garp who will nod along/ignore while his superiors orders him and his fellow Marines to kill a couple hundred pregnant woman since Luffy COULD have fathered a kid with them.
