I haven't been able to get a good answer to this, but gently asking this question of people around me, I've noted that even people who aren't usually tuned-in to social issues have an opinion on it (specifically that it's vaguely a bad thing). I suspect that there's a bit of latent tribalism inherent in people. People don't like to see their "tribe" get smaller. It just instinctively gives people anxiety. (I somehow dodged this sentiment, maybe a benefit of my neurodivergence).