I don't think you understand how Lemmy works then(not trying to be rude,just evaluating based on your comment and instance.)

While yes, you are a member of a Canadian instance (Lemmy.ca), lemmy.ca federates with other instances, many in different parts of the world. Some are European, some from the US. Undoubtedly some in other countries also, since anyone can spin up an instance, but I don't know any examples to give you.

The poster you replied to is from lemmy.world, one of the more generic instances is based in the US. Same as OP. The sh.itjust.works instance is also Canadian,but you should expert to see tons of people from all over, not just Canada and not just the US either.