Yeah this is a much, much better way of doing it.

code/modules/mob/living/simple_animal/simple_animal_vr.dm

@@ -9,7 +9,6 @@
 	var/list/prey_excludes = list()				//For excluding people from being eaten.
 	var/voracious_chance = VORACIOUS_CHANCE		//Mob AI Engagement probability when rolling between regular melee strike and a vore attempt, default 40%
 
-	var/holodeck = FALSE
 	// Vore belly interactions
 	// Most mobs are only going to have the one gut. Multi-gut set ups should refer to Ash Drake's dragon_vore.dm for set up.
 
@@ -50,7 +49,7 @@
 // Simple animals have only one belly.  This creates it (if it isn't already set up)
 /mob/living/simple_animal/init_vore()
 	vore_init = TRUE
-	if(holodeck)	//hacky dumbshit, but I can't get it to work right anyway
+	if(CHECK_BITFIELD(flags_1, HOLOGRAM_1))
 		return
 	if(vore_organs.len)
 		return