You are judging previous actions by todays standards.
No, I am merely pointing out that your (y'all) chest-beating seems rather out of place when achieved by the means of killing your opponents. It was not necessarily an act of preservation to burn the libraries of others who were perfectly willing to engage in the same preservation and distribution that you claim is yours alone. In fact, it can be argued that monopolizing production and distribution hurt the cause of the Gospel, as the latter explosion (after the Reformation) undoubtedly proves. Once Rome lost control of the texts, the Gospel burst forward in leaps and bounds.
Was Calvin correct for burning Michael Servectus and destroying his work?
My memory is poor, but I do believe that Calvin personally interceded on Servetus' behalf - pleading for beheading instead of burning, for what that is worth... But I will agree with you in some part - It took a long time for the Reformers to rub off that which they learned beneath the sword of Rome.