Elsewhere in this thread I've addressed this. I'm not convinced that a mismatch in supply of majors and demand for recent grads of those majors can account for much of the boomerang phenomena. It's far too prevalent among under-30 to be reduced to this.

Also, my use of across the board was probably inappropriate. I agree. I should have said in general instead. There are some fields, primarily STEM and the service industry with high wages and/or good job outlook, but for the other sectors, this is not the case at all.