Interesting read, you raise a lot of good points. One I’m surprised you didn’t touch on as a foreigner in a servant culture, as you call it, is the fact that you were employing someone local. My mother lived in Tanzania for years and had a housekeeper who was able to send her own daughter to school because she was employed. The trickle-down economics was very real for her, and is in a lot of servant culture countries.
In the US we just mask our shame about being served by throwing tips at people.