Who benefits is Germany and Sweden!
There is a humanitarian disaster for women and children, the overwhelming majority of Syrian refugees. They are the ones being taken from refugee camps and being forced into child marriage, forced prostitution and sexual slavery.
As extensively reported by both the UN and feminist campaigners such as Julie Bindel.
But Germany and Sweden decided to have a survival of the fittest policy of whoever can manage to get here gets in. And as a consequence they are now dealing with what happens when there is a huge increase in the proportion of teenage boys and young men in a country - regardless of whether that's through immigration of males, emigration of females or selective abortion of females.
But in the long run Sweden and Germany benefit financially from taking a bunch of young men, often from countries like Morocco.
It is a lot cheaper than taking women, old people, disabled people and young children from refugee camps. You can get a lot more labour from a bunch of fit young men who are capable of crossing Europe, without the cost of 15 years of childcare and education, or the cost of caring for the old, sick and pregnant.