In a closed society, each rung of workers have a job and role to play. But when the govt allowed foreigners to flood in, how do you expect the local workers in the middle rungs to compete?
Assuming a big chunk of foreigners are of top 10% calibre (according to human IQ bell curve), and sinkieland now has a 30-50% of work force consisting of these top 10% of human race, all willing to do the work that was formerly done by the average locals. Tell me, how do these average, middle rung locals compete and man up?
Without any protection, these middle rung locals can only downgrade their career and fight with the bottom jobs like toilet cleaners, sex workers, road sweepers.
It's crazy to continue to import so many foreigners, even if these foreigners are truly talented.