Agree with GaKaye. We have been doing this in Ontario (and most other provinces) for awhile now. If you are fully-vaccinated, you show your vaccination certificate or your QR code on your phone. It takes all of a few seconds. No big deal, especially if it helps minimize any Covid spread. Not even close to the hassle of arranging for Covid test within strict time limits to be able to get on a plane.

If you're not fully-vaccinated and have to do a Covid test every 72 hours, then yes, that might be a hassle. However, if you're not fully vaccinated maybe you shouldn't be travelling in the first place. Just my two cents!