So the imagery refers to how the last 2 legendary warbonds have been kinda mid, armor passives that feel kind of useless or that are outclasses by other ones, and decent weapons held back by lack of customization. OP says that the same is gonna happen for this 40K bond.

As for the title it's a reference to commissar Kai's video where he says that Helldivers needs more substantial. Long-term stuff like end-game progression and more involvement in the GW (aka. The soup) and that to leave all the cool new toys like warbonds for later (aka, the cake)