I’m trying to see how Hook even helped in taking Hades down? Zelena would have made the choice of Regina over Hades without even seeing those pages, it told her nothing new because Hades had already explained to her it’s power! So how does Zeus think Hook assisted in killing Hades when Emma never killed him, and the pages literally played no part in it!
The way I understood it….Hook put the pages into the book; the pages explained to Emma that a god can be killed with the Olympian Crystal.
…which Zelena knew because Hades told her. So yeah, those pages played no part. Zelena didn’t need this vital information, only Emma/Regina did. So I guess Hook helped in the sense that the heroes needed to know but Zelena, the actual one to pull the metaphorical trigger, didn’t.
So.
Hm.