It wasn't that simple. The problem of the conversos was a major political problem. This didn't happen over night. Jews had occupied many high positions in Spain

It wasn't that simple. The problem of the conversos was a major political problem. This didn't happen over night. Jews had occupied many high positions in Spain and following the ultimatum that Jews either convert or leave, the widespread belief among the populace that many of those converting were merely simulating conversion simply to remain in those high positions was a threat to social order and probably even an existential threat to a Spain just recovered from Islamic Moorish rule. The Inquisition set out to determine whether these claims were true in a process that was actually much more just than was the norm during that time period.