So when you are moving, it unfreezes? How is that?
It doesn't. You clear the snow and ice off before setting off. The defroster or heater keeps it from refreezing with the help of the slipstream of air helping to keep the stuff from accumulating on the glass. You slow or stop, it can accumulate, it becomes more than the defroster or heater can handle, it freezes. Maybe once you're moving the wind plus the defroster can knock it loose, maybe you have to pull over and scrape it off again, maybe the wiper fluid will help if it doesn't just make it worse.
In Alaska, it gets cold enough, that you don't have the re-freeze problem
You don't get road slop from treated roads from other vehicles? I've been up to Canadian provinces where it's ungodly below zero and the same problems exist.
I don't turn on the heater when it's cold.
That could be the big difference between you and everyone else. I'd rather deal with the windows than freeze.