Straight from the horse’s mouth:

夜職って本当に気軽に働くものじゃ無い。働いたら、自己肯定感は低いのにプライドは高い見た目だけに気を遣 って金のことしか考えてないXで他人を貶すモンスターになる。ほぼ全員こうなる。みんな夜職やる前はいい子 ですくすく育ってたのに…金と引き換えに人生の豊かさが減るから夜職は最終手段です

Working at night is not really easy to work. If you work, you will become a monster who belittles others with X, which only cares about money and cares only about money, even though you have a low sense of self-affirmation. Almost everyone will be like this. Before everyone did the night job, she was a good girl and grew up... In exchange for money, the richness of life decreases, so night work is a last resort.