Actualized in fantasy usually in the medium of hentai.
There's a bunch of people into vore on one of my discord servers and I haven't noticed them into the idea of actually being eaten themselves, or eating other people. It's not necessarily a cannibalism fetish. Usually it's tied into a monster porn fetish.
It came up when Armie Hammer was "outed" as a "cannibal". If you read what was actually said, he basically has a vore fetish, though from the secondhand accounts alone it didn't seem like his "accusers" had the right context or vocabulary.