You are asserting:Trying to say I have a contradiction?
a) expats should not send their little kids to learn Cantonese at school because its too hard
b) older expats should learn Cantonese as its not that hard and you will have a fuller life
Everyone (who happens to be sane) in this world knows that language acquisition is best done when young. Contradiction, nahhh, I'm not saying that at all; Using your own words and ideas, I'm demonstrating and that you are certifiable.