This is pure sheer garbage.
If you see the time-lime in Spain's history, whenever there was a political/scientific/philosophical breakthrough, Spain arrived late: Barroco? Spain was last, renascence? Spain was last, Diderot encyclopedia? Never arrived in Spain during the reign of the inquisition.
Quevedo was a painful misogynist, they all (writers from the "Spanish golden age" in literature) were virulent anti-Muslims and antisemitic (there is a word in español "judiada" which means an awful action done by someone, which comes from judíos, Jews, a reminder from that era), but both cultures contributed scientifically and economically to support Spain's rise to become a superpower, even the "Paella" a typical food has rice, a grain that Muslims, Mesopotamians, introduced in the Iberian peninsula, thus helping to have food there.
Quevedo stated that only the true "noble profession" that a Spanish should have is "the profession of arms" (soldier)
At some point, the king of Spain, Charles V, became the king of the Sacro-Roman empire, but only because they started to extract gold and resources from Southamerica, the only thing they actually cared:
Both Cristobal Colon and Hernan Cortez believed that gold is the only pure thing that closes you to God and paradise, and the true love Spanish have.
The Hispanic culture is so backward, that when they started to lose their colonies what they became was a reactionary shit resulting in Franco.