That's probably a poor choice of example given cannabilism is pretty uniformly condemned.

Even ignoring that, pretty much every society regulates food. The health inspector shutting down resturants is just as much of a regulation as religious rules like kosher & halal (and there is some reason to suspect that the original goal of those rules were at least partially health related and made a lot more practical sense with the technology available 2000 years ago)

Nonetheless, ignoring all that, i still think any self-referential taboo applies in all circumstances, and thus is kind of pointless to discuss.

E.g.

All societies regulate unlawful insider trading. Societies where all insider trading is lawful are still vaccously regulating unlawful insider trading.