Forcing an admiral out of his DF, stunning him and making him scream, sweat and snot using basic CoC from dozens of miles away is hard to digest for admiral stans. Just imagine Shanks going into direct combat with Aramaki, infusing his blade with that powerful CoC that stunned him from dozens of miles away would end bad.
99% of the pirates including Kid, Mihawk etc are mass murderers
- Annihilating islands (e.g. Ohara) for knowing too much about the WG
- destroying civilian ships (Akainu)
- Blowing up Marine Battle ships full of Marine soldiers to attempt to kill Luffy while he's on it (Onigumo)
- Shooting a fellow Marine soldier for asking whether it's necessary to kill thousands of marine soldiers just to kill Luffy (Onigumo)
- Saying a country not affiliated with the WG has no right to exist and deserves to be enslaved and annihilated (Aramaki)
The higher ups of the Marines are scum willing to kill thousands of innocent lives for their wicked ideology.