I mean I do agree with you here, but the broader problem with immigration is that in the context of your point I'd that those weren't war torn or economic/welfare migrants but people who knew that heading to Rome would be for business first.

Essentially the type of immigration and it's rules in Europe had been a thing but productive when you can have N entire block of people living on welfare with 0% interest in getting a job or even learning the language and with that foundation you don't either always get 2nd/3rd generation that are working but instead doing crime.

Which drives the demand for labor immigrants down because they ofc do lit want to establish themselves in a country thdt that is dangerous.