@Hffnr As 3Rosez said, the game is rated T and they want to maintain that rating. Alcohol usage or reference on its own probably wouldn't get a game an M rating, but in addition to the crude humor, violence, and sexual themes, if they had a pack where you could get drunk, they might be pushing it.
I don't think this will ever happen, because throughout Sims 4, any alcoholic drinks have been subbed in for "Juice" or "Nectar". Even the drinks at the bar aren't explicitly stated to be alcohol, despite having names referencing popular mixed drinks.
Besides that, I don't love the idea of teaching kids that alcohol makes everything "better".