The World Government didn’t want Morgan publishing that because they couldn’t catch Sabo and it would make them look weak. If they killed or captured him they wouldn’t want to cover that up.
Morgan said he “spins lies to move people’s hearts” so I think instead of publishing Sabo escaped with Vivi, he said “Cobra was killed by Sabo who then kidnapped Vivi”. Again this makes the World Government look bad cause they couldn’t catch him.
The reactions from the Revolutionaries are more disappointed and shocked then sad. Like a “I can’t believe he would do that” reaction. Especially from Ivankov’s reaction.
Makino and Dadan’s reactions. Now, even though the news shocked Makino, I believe she’s reacting to him being alive more than anything else. Same with Dadan and the others. They find out he’s alive and then he killed someone.
I kind of think Sabo and Cobra were protecting Vivi because she has information or something that could hurt the World Government. Maybe the Ancient Weapon? Im had Vivi’s picture so she’s obviously important.
Since Sabo got away with Vivi, the World Government want to cover it up so no one goes after them.
*Theory by biriibirii