This is definitely a generational, regional, ethnic, and class thing.
As a non-Asian kid on the US West Coast in the '80s, I learned to use chopsticks only slightly after learning to use a fork or spoon, even though we rarely ate food from cultures where chopsticks are standard. Heck, I'm pretty sure I was given chopsticks to eat tortellini at least once!
I was somewhat baffled as an adult when a partner's parents weren't comfortable using chopsticks ... and they (the parents) were from New York City and had grown up eating Chinese takeout regularly.