These are not the immigrants you’ve been looking for!
These people are not going to help you preserve your European States. You will instead continue to lose your stability, personal freedom and safety. This will result in a Net Loss, as the social programs run out of public funds when those making the most money have been driven out of the country.
I'm pretty sure European Leftists have been so excited by the prospect of finally getting back at Dad and The Church that they haven't really thought the end outcome all the way through.