The way in which these kinds of data are put together—as you mentioned, millions of people versus small communities—obviously if you have a very small community, it leads to the identifiability of those in that community. That's always a concern. That's why, again, you should always involve the federal Privacy Commissioner, who can examine all of that and make sure that the proper protections have been put into place.
On February 10th, 2022. See this statement in context.