"For instance, Osamodas isn't cruel to his disciples. he didn't have them inherit his looks, for one thing. Instead, he gifted them with his love for animals, and he gifted them with the ability to tame animals with a single look. He eventually even created a special creature specifically for his disciples: the majestic Gobgob, descendant of dragons, who can capture the souls of monsters, and even fuse with its owner to make him stronger."
(Emphasis on the bold part)
Game mechanics aside, considering that god Osamodas didn't gift his disciples with gobgobs well before or during Dofus (possible future retconning aside), means that it is possible that Oghrest's Chaos had some part to play during it's creation.
I don't play Dofus, so I have no idea where an Osa's summons exists or comes from until its summoned, but I do know that they didn't have gobgobs in Dofus.
There was an episode of Kerubim, with an Osamodas who was rather terrible at summoning the requisite creatures into battle. She had to eventually find another way to ...create... the creatures she wanted to control, right on the spot. This implies that there is at least some minimum level of difficulty in getting a creature to the battlefield, even when the Primordial Dofus were in balance. Add in the destruction and disruption of Ogrest, and I can easily imagine it becoming nearly impossible without a lot of time and preparation, which would have made it impractical in the extreme for a battle.
It's no wonder that a more direct, readily available symbiotic relationship became the new norm. It's probably why we see Drhellers running around with enutrofs, and stuff like that, as well. I wouldn't be surprised if the Living Bag, Living Shovel and Living Chest had been somehow affected as well. Perhaps that stuff works fine in Enurado itself, like the robot chests, on a more permanent basis. But that is an area with at least some core divine stability and power inherent in it, and you'd kind of expect the very best stuff the class is capable of to be represented there.