The US just banned foreign travelers from China besides immediate family members of Americans. I wouldn't go that far, but it refutes your point.
Is there anything you won't defend the Trudeau gov on?
These decisions aren't made by politicians, but public health officials, generally. Is there anything that people won't attack the ____________ government for?
Oh, and speaking of proactive:
https://www.baytoday.ca/national-news/newsalert-canadian-evacuees-to-be-quarantined-in-trenton-2065120Canada is doing this the same as everyone else.