Gratitude is one of the most fleeting emotions.
Perhaps--in That regard--the Cultures are Similar.
One can understand how a Totally Male-Dominated "Macho" Culture might be psychologically unable to accept a "Boon" from a Superior Culture!
If we are dealing with such a "Macho" culture, we've "got our Work cut out for us!!"
Doc
and no good deed goes unpunished.