> I really found the way Craig injected himself into the story to be a distraction and wish this had been more like Sir David Attenborough documentary

Can you already see this 94 years old guy jumping into the water to build a personal relationship with an octopus? ;) I think the whole point of the movie was not capturing the life of the octopus, but showing the relationship between human and octopus. This would not be possible with the way Attenborough documents things (i.e. as a narrator).