Anecdotally, the movement I've seen largely results in consolidation of 'like-minds', rather than a culture-mixing diaspora that results in a greater balance of varied perspectives. I hope my limited experience isn't the norm, but I suspect it is.
Prior to COVID, it seemed like most people who moved long distances did so either for financial opportunity or to “come back home”. During COVID (and up to now) it seems like a lot of people are moving to places they’re more politically/ideologically/socially comfortable.
I think part of that is due to the expanded availability of remote work - but not all. My social circles are predominately conservative, and several of them have left jobs and took a significant cut in pay to move to more rural areas because they wanted to be away from the city. A couple of the more liberal people moved the opposite direction for the opposite reason.
