This is rather misleading. The average processing time for Canadian citizenship remains 21 months. There is a residency requirement that applicants live 1,095 days (a full three years) in Canada before applying.

Some require a residency follow-up, because there are people who cheat the residency requirement, forging paperwork to pretend to have lived in Canada, etc. This is only a minority of cases. There's an average of 172,000 new citizens to Canada each year, which is huge.