C6467 Joint Attack
The mermaids had nothing to do with the Golden Mysterious Macaque. They were just allies of the Golden Mysterious Macaque.
No matter how many mermaids they killed, it would not change the outcome of the war.
Moreover, they could not decide the outcome of the war with the mermaids in a short period of time.
Since that was the case, the Tyrant Ape Clan didn't want to die for nothing