I can't read the article, but the Spanish Inquisition is generally misunderstood in the historical context and innumerable myths have been spun about the affair through later Protestant leaflets and the like (outrageous claims of the genocide of millions, for example, compared to the actual 3,000-5,000 executed over the course of close to four centuries; compare this to the 150,000 secular witch burnings during the same period elsewhere in Europe). Most people don't even know what it was about, its historical character, or the historical antecedents that led to it in the end. Typically, it is used as a rhetorical device to halt discussion through whataboutism, like calling someone a racist without merit ("What about the SPANISH INQUISITION? You know, that horrible SPANISH INQUISITION? Oh, yes, the SPANISH INQUISITION was bad.").

How many people understand the converso crisis and its antecedents that threatened the very existence of Spain? The widespread social unrest that resulted that the Inquisition was brought in the resolve? Or that the judicial standards of the Inquisition were ahead of their time?

Persecution and forced conversion were not the objective, and indeed, the very notion of forced conversion is understood as not only evil by Catholics since it violates the conscience of the unbeliever, but it is an impossible feat because conversion can only be done freely. Rather, it was the widespread fear of feigned conversions, to obtain high offices, among the general populace that led to widespread unrest (many conversos had attained high ranking positions in the Spanish government). Whether there was any truth to these fears is another story, but the unrest was such a threat to the stability of Spain, that the Spanish Inquisition was called to resolve this crisis by subjecting the matter to an orderly judicial process. Some may argue that the later ultimatum of conversion or expulsion is a kind of de facto coerced conversion, but that's debatable, especially given the number of Jews who left for places like Poland.

We can criticize the affair (which, despite the investigation of claims of heresy, was actually of a secular character), but the attention it has received though the "Black Legend" as some egregious orgy of evil (committed by the Protestant's favorite punching bag, the Church) out of step with even the common practices of the day is simply wrong. Sadly, these sorts of things can seep into historical accounts and curricula, especially when they agree with prejudices. So I wonder about the substance of an article that uses this episode as a basis for investigating this question.