It was more the Spanish goverment than the Church that bears culpability for the Spanish Inquisition was it not?
Weren’t they pretty much one and the same back then?
I would say that they bear equal blame, but the dynamic of the situation was that the Spanish Crown was aggressive in pursuing the use of inquisitorial courts, while the Church's role was mostly one of complicity.
The fact remains that one was more likely to obtain due process and win acquittal in an inquisitorial court than in a royal court and far less likely to be tortured in an inquisitorial court than a royal court.
Moreover, inquisitorial courts were often used by royalist clergy against the Papacy - to wit the inquisitorial investigation of St. Teresa Of Avila - who as a leader of the Discalced Carmelites and a strong booster of the Papacy was investigated at the behest of the Old Carmelites who were partial to the crown and resented the Papacy's move to reform their corrupt order.
There are far more angles to the story than many Catholics and Protestants.