Li Yao's words were indeed a bit excessive; in fact, the ogres had already moved past the stage of raw flesh and blood, entering the tier of civilization.
However, they were still at a relatively low level of civilization. Of course, more importantly, their dark cooking was something probably only acceptable to their own race and very few others.
Ultimately, it was related to their traditions; when the ogres were extremely hungry, they even ate the dead of their own race. Their motto was that all living beings under heaven are delicacies.
So, from this perspective, what Li Yao said wasn't incorrect, as this kind of concept and ideology had been discarded by new generations of civilizations.
In fact, the past traditions of the trolls in the Dark Camp were not much different from those of the ogres. It was only after joining the Dark Camp that they changed this tradition.