As of now, I can only count a very few who actually did it, turns out it's hard to leave where you've lived your entire working life to move somewhere you've never been, and the price differential isn't as amazing as it once was (since Covid flattened that out somewhat).
The ones who did end up doing it ended up following their children (who were priced out of where they grew up).
Normally you'd expect measured, predictable, steady inflation to be the method to "defuse the bomb" but so far that hasn't been really tried (if houses keep going up 1-2% a year, but inflation is 5%, you have a 3% drop in value each year even though on paper, you have an increase).