CP 0 not wanting to anger Kaido doesn't imply that the World Government as a whole feared them.
- Kaido announced to throw the world into chaos
- Teamed up with another emperor
- announced the goal of gathering ancient weapons - which is especially critical, given
- Wano hosts an ancient weapon
- Wano is critically tied to the void century, Kaido said he chose Wano for a reason
I don't really buy that Imu isn't interfering because "he wants to keep order". If he has the ability to obliterate Yonko, he would've done it, ruling supreme over the fodder Kingdoms. What does Imu have to lose, if his power reigns supreme? Unless his power has limitations.
And Im sets an example by erasing a fodder Kingdom?