I vaguely remember that, can't remember if it was added in dlc or there from the start. But yeah something like that without the rather jarring animation, or no animation preferably.
I bet the "Dine and Dash!" perk has been turned into an additional rank of Cannibal.
Dine and Dash is a challenge perk for consuming 25 corpses. There is also the Ghastly Scavenger perk which could be implemented as a sub-perk for Cannibal. For those that don't know, Ghastly Scavenger allows access to eating Ghoul corpses and Super Mutant corpses. A benefit to the Cannibal perk is that it is available at Level 1 or 2 so players can start out as a Cannibal instead of playing as a decent human until level 12.