Perhaps you need to give your own head a shake.
>
>I live in Ontario, Canada. I suppose I'm imaging the frozen nozzles I
>/personally/ experience at least a couple of times every single winter?
To my knowledge, I've never had that happen, and I'm in just as cold a place as you are.
What I have had happen is snow/ice freezing ON TOP OF the nozzle, thus blocking it. Never a nozzle blocked by frozen washer fluid.