I am unsure if this is the incident that they are referring to, however a teenager died in 2007 after jumping off a bridge while under influence[0]. As per the article, that was the catalyst for getting hallucinogenic mushrooms banned.

0: https://www.reuters.com/article/us-dutch-mushroom-idUSTRE4AR...

Thanks.

Imagine the outrage if alcohol caused the death of a single person... Oh, wait.

In my high school someone literally did get drunk and die from jumping off a bridge. Astonishingly Australia didn't ban beer after that.