Today is the day designated to record how many and what kinds of people live in Canada. The return of the long form census is a big deal, as Statistics Canada’s promotional activities explain. It provides the information needed to make evidence-based decisions; while you can debate the meaning or significance of the evidence, denying that evidence is almost always a serious mistake.
Media reports have noted how excited people are to provide their information, and to suggest questions which should be asked.
The previous Conservative government was worried about an invasion of privacy (while ignoring the Statistics Canada Act, which accounts for such concerns and has existed for decades). They also worried about people going to jail for not answering the questions. Since Statistics Canada has had five years to prepare, there are reports on the follow-up teams which the new government plans may use to ensure compliance.