There were numerous changes made to CIU that went against the previously established convention built upon the episode, the change from manual fire to automatic fire, being one of them. If the overdrive info can be added to the tutorial, why can’t the info about shared food and keys be added to the Multiplayer tutorial.
Besides, there’s lots of space to add an INFO button in the multiplayer menu in case people miss the in-game help button, I could already envision adding an info button near the mission config button. The info could contain the mechanics of multiplayer including how food and keys are shared among players among other multiplayer only mechanics.