Whiny, uninteresting people mope about drinking and screwing all day.
You didn’t read the book.
Dedalus, a young teacher, doesn’t mope about drinking - he does drink, all day, til he is so wasted he has a hallucination about his recently dead mother whom he feels guilt over for his treatment of her as she was dying, and he smashes a chandelier then gets punched out by an English soldier.