This detail suggests that Olaudah Equiano's audience were the Europeans who indulged in slave trade. He asks this question to appeal to their conscience based on their Christian beliefs.
Olaudah Equiano was a notable African of Igbo descent who was sold from Africa's West Coast to the Caribbeans and later to London. He wrote several accounts of his experience and emotions as a slave as well as the ill-treatment meted on him and his fellow slaves by the Europeans. After enumerating the several hardships faced by the African slaves, he asks the question above.
From the wordings of the question, a reader can infer that it was directed to his captors. They believed in Christianity and the Bible but were apparently not heeding to the requirements of their God who instructs that they do to others just as they would want to be treated.
I disagree. I think that contrary to the assertion, Malaysians are caring. To agree to the question would be to make an error of hasty generalisation.
When you encounter a Malaysian, the probability that he or she is an indigene, a Chinese or an Indian is one of three.
Contrary to the assertion in the question, Malaysians care deeply about family work and their National Heritage.
If you got into a conversation with a Malaysian about any of these three topics, you are most likely to have a pleasant conversation if you are polite, well versed and keep out of North American Politics.
Another misconception about Malaysians is that they don't take to the public display of emotions. They are very reserved, courteous and discreet. This may be interpreted by a first time visitor who is American as uncaring.
Malaysians also appreciate it when foreigners take a liking to their native cuisine, culture, language and traditions.