He learned his anti-American values from his mother.
I agree. However, I think he also hates his mother, and is trying desperately to disassociate himself from her - and he does that by being anti-white & anti-American.
I think she taught him to hate the white, capitalistic world, without realizing that she was white - no matter how long she lived in Indonesia. I think he came to hate her, his grandparents, and anything associated with them.
And that includes America.