Why don’t Animals consider Cannibal as K2 like Little Monsters count The Fame Monster as LG2 ?

I’ve always considered Cannibal as its own album, but i hardly ever see Animals refer to it as one. Little Monsters refer to The Fame Monster as LG2 and some Lana stans refer Paradise as LDR2. And The Fame Monster and Paradise are shorter than Cannibal. The streaming version has 12 tracks and is well over 40 minutes long like most studio albums. It’s also sold more than warrior and rainbow, so why don’t we count it?