A peculiar statement, since the Spanish monarchs were Hapsburgs, just from the Spanish branch of the Family.
And the Austrian branch had lost any claims they might have had to the American possessions of Spain all the way back in 1556, when Charles V abdicated, giving the Empire and the German lands to his brother Ferdinand and Spain and its possessions to his son Felipe.
just a matter of time until a family owned empire runs out of even cadet branches and they have to dig back centuries to figure out who’s the monarch. The Germans got cut out forever.