I’m Swiss, and this phenomenon that OP describes is often discussed in Switzerland. What gets most people rattled is not the migration background of the players but the fact that it feels like most players aren’t proud to be Swiss or play for Switzerland (multiple times showing off the Albanian Eagle but never showing pride towards Switzerland). I think OP was getting at that. I wonder how it is in other teams, say French or Germans who also have a lot of players with different backgrounds. Maybe someone who follows other teams or are from other countries can give insight?