Drinking is the thing they can share with others without it killing them.
you clearly didn't heard about Drakk Goblinslayer.
well I feel like I have to do a serious comment here, so:
Don't understimate moves that change stats of other moves. A Dwarf fighter dumping charisma is basically playing with 5 stats, with Parley on a secondary if not primary stat, all at the price of a fistful of coins for booze. That's
strong, and even in Apocalypse World you have these kind of moves.
Look, just imagine a maxed out Dwarven Fighter:
STR 18
DEX 13
CON 18
INT 11
WIS 9
CHA 8
the racial move reads like: as long as you spend coins for booze, take +4 on Parley.