Canada, like several other countries around the world, continues to ask international arrivals to show their vaccination status. ArriveCAN enables travellers to provide verification of their vaccination status electronically so that they are processed a lot faster than they would be manually. It actually improves the efficiency of processing international arrivals. Without it, we would be adding several minutes to each passenger as they arrive at our borders, and we would be causing more congestion at our borders.
On August 19th, 2022. See this statement in context.