It wasn't clear from the article if the blocking is based on the account, or the geo-located endpoint (or both?). Will Canadians in the US see news in their feed? Will a traveler from Trinidad and Tobago see news while in Canada?
Law and enforcement is based on geography. For example, Canadians in China don't have access to sites that Chinese citizens don't, just because they're Canadian.
They do actually, if they're roaming on a Canadian SIM