This is false. Canadians could not board planes. How can you leave the country if you were denied access to a plane ride? This did violate the Canadian charter of human rights.
Yeah the US also blocked access to the unvaxxed, the only neighbouring country to Canada. And denying access to air travel was not done to “stop the spread of COVID”. It was malice, and to make excuses for this with twisted logic is quite disturbing to say the least.