As a Canadian who has been listening to the "51st state" wordvomit coming out of US administration your comment is very apt.
For some reason I can't fully grasp, a LOT of US citizens are ignorant to how the rest of the world is perceiving them at the current moment. There's countless US articles talking about US/Canada relations as if it is a trade dispute and that they think Canadians are eager to re-unite and go back to the way things were without ever addressing the threats to our sovereignty. Then you have comments like the parent to your post who is....wildly off the mark thinking that in a point of contention we'd prefer to keep our data on US controlled systems because their government would need to follow their own legal processes to acquire data of a foreign/hostile state??????
Is the rest of the world going to stop trying to immigrate here, though? ICE is still finding plenty of foreigners to detain and deport, who voluntarily set foot on US soil; there are still plenty of foreigners who are complaining about how hard it is to get a visa to work in the US where the pay or other conditions are better than where they live.
Indeed, the angrier the rest of the world is about the US, the more US citizens have to worry that that foreigners attempting to immigrate here for the long-term have a plan involving exercising influence on US politics from their position inside the country, in order to punish existing US citizens.