And the logic of the first paragraph-- perhaps it's overturned in the article but upon a light skim it doesn't appear to be the case-- suggests that quality comes from abroad and only proteccionismo allows spaniards to be employed. So the Spanish are essentially unable to be as qualified as foreign futbolistas or docentes?
I think that's a reference to the Bosman Law, which ruled that EU zone national leagues could not impose restrictions on the number of foreign EU citizen players each team could have. As I recall (I was living in Spain then), there was considerable fear that this would destroy national soccer talent, since in Spain football clubs are financial powerhouses that could afford every foreign star player under the sun. These dire predictions may have turned out to be false, as Spanish football seems to be living a golden era (Euro and World Cups).
In any case, the first paragraph of the article may sound like warped in its logic, but considering the proved harm inbreeding has caused in Spanish Us, I think it has to be read as part of a longer conversation on the topic.
I also think the article is too kind when discussing the questionable treatment that many "Cajales" have received. I've heard of a few cases where a "catedrático" imposed inclusion of his name on the papers and research projects of a Cajal Fellow if s/he was to have any hope to be hired by the department. In my experience of some Spanish "catedráticos", I'm willing to give credit to these rumours.