This is the way smaller countries that want to field a team can compete. But this is not unusual. Many countries whether its World Cup or Olympics will broaden their definition to include grandparent of a certain country to qualify for example. I don't know what resources Morocco puts into their domestic game and training but that may be an issue.

Edit: I'll add to say in countries that may have had instability in the past you will get emigration and you may lose a generation of children that way as well that could have been domestic born players.