Because this year, the USA is alone in the world running an attempt to see what happens when Covid 19 is allowed to spread unchecked, in a country where this happens if you get a survivable case of Covid19
From the perspective of the pleb worker, living in a country where you have a higher chance of getting Covid19 is bad. Running a chance of being financially ruined if you do survive it is worse. Canada has both a lower chance of getting Covid19 due to their lockdown, and a functional healthcare system which doesn't bankrupt you for using it.
Hence, this year taunting a Canadian with "are you packing your bags to go back to Canada" doesn't really work.
Biting the hand that feeds IT
