The problem is that intuitively, you probably think of them banning it because it's about someone being buried alive. But then, it could be that there is a bottle of pills in a cave somewhere in the game.
QT: https://qoto.org/@olives/112862638939130980
You also have to think, censoring drugs inside a video game isn't really going to make them go away. In fact, the black market seems to proliferating even with this censorship.
It only winds up creating annoying red tape for game developers / players to navigate.