“In reality Pope Damasus declared a canonical list in 382, and Gelasius in the 5th/6th century added to that a quote from Augustine when he added a list of prohibited books. That would not invalidate Damasus’ original declaration.”
Even if your assessment were true, if this “canonical list” wasn’t proposed to be an authoritative pronouncement on canon until 1794, then what does it have to do with the matter under discussion? Clearly, it could have held no weight prior to the Council of Trent, as at that time nobody had ever heard of the notion that the Council of Rome pronounced a body of canonical works!
True or False, St. Jerome produced a Bible at the direction of Pope Damasus in 405 AD containing all of the Books later rejected by Luther?
Peace be with you
The fact that every Published Vulgate from 405 onwards had this list of books? Or did that just happen at random?