The replies here arguing we should publish it all are wild in the worst kind of first-order thinking way. It’s a census: it just asks questions. If you start publishing and weaponizing the data against people with various attributes, they’ll just lie or not answer. And then you are left with worse than nothing: bad data people try to act on.
The Harper government actively worked on destroying the efficacy of the Canadian census, to make it more difficult for subsequent governments to make data-driven decisions.
In addition to the obvious goal of making it easier to identify and target homosexuals, trans people, minorities, immigrants, it's quite possible that destroying future governments' ability to make good decisions is one of the objectives of the Republican party. Stop voting for the face-eating leopard party, already. They don't use the litterbox, shit everywhere, and actively try to eat your face.
For all the very clever people pointing out that this is nothing new, I have two responses.
1. Your cell company may track your location, and your credit rating agencies know how many nose hairs you have, but they doesn't always (or even usually) have the deeply personal information you're supposed to put down in a census.
2. Enough of a change in degree is a change in kind. If you disagree, remember that Imperial Russia had the Okhrana and sent over a million Sybiraks - prisoners and exiles - to Siberia, and then the fucking CHEKA and the NKVD and then the (kinder, softer, slightly less outright murderous) KGB went ahead to send 18 million people into the GULAG system, and outright murdered half a million to a million. This was all the same, right? No difference?