I am not even making a value judgement here on migrants or their culture.

Simply that migration is being used as a cover to hide the collapse and aging of populations. It also provides excellent cover for politicians to blame the failings of the system on. In Australia everyone loves to blame migration for house prices skyrocketing but no one has any idea about the fact that the money supply has also skyrocketed or that people are using their houses as a store of value. And as the population shifts so do the things that win their votes.