While a little unclear on details, this seems to put the parent's assertion well within the realm of possibility. 45% of people had nothing to drink in the past

While a little unclear on details, this seems to put the parent's assertion well within the realm of possibility. 45% of people had nothing to drink in the past month. It's therefore believable, barring additional data, that the majority of people drink at most a "little", as the parent put it. Are you interpreting this differently?