Christians and Jews always held positions in those countries. It ALWAYS had to do with the broad FAMILY STATUS. Over there, it's not what you do, it's who your family is.
THAT truly is how things work over there. Always have; PROBABLY always will.
Most families have "bad apples" now and then and THAT is always understood too but it doesn't diminish the general status of a family.
You claiming that they are not paying jizyah?