History suggests this is a short-term solution, not even a medium-term solution.
A critical mass of people pushing back against fascism leave a country, and that country tends to devolve into the kind of place that starts wars with its neighbors.
This is why I always turn my head and squint at Americans fleeing to Canada, as if an America that fully embraced everything they see it doing wouldn't come right after Canada next.
Look at Trump and even Vance “joking” about Canada being a state. They wouldn’t hesitate to take Canada by force if America ever got to the point where fleeing to Canada was forcibly prevented.