South China Morning Post
https://www.scmp.com/yp/spark/worksheets/article/3275901/hong-kong-therapist-explains-why-saying-i-dont-care-can-hurt-relationships
Hong Kong therapist explains why saying ‘I don’t care’ can hurt relationships
People may use the phrase as a shield to protect themselves or as a means of surrender, but it can lead to frustration and hurt feelings.