So Canada should just ignore all the stuff the US is doing, reinforce their economy by buying from them, and pretend there aren't risks regarding the possibility of the US being able to remotely interfere with the jets they sell? As if control over others isn't something the US would ever try to do.

The best machine in the world isn't worth shit if its reliability when needed is called into question, and much less when the seller can't be trusted with that much power. That's buying a few jets by selling sovereignty with extra steps - quite the bargain for the US and their current aspirations.

Buy from reliable allies, such as the EU, and if total defensive independence is a must start building the needed framework to develop a competitive jet building industry so that Canada can build its own by the time these ones approach EoL. Main point, avoid the US jets.