But Trent settled the canon in agreement with Hippo and Orange and contrary to Luther’s blasphemies.
Sorry, but do you actually read what refutes you or must you just parrot the party line? As expressed, if the canons of prior councils were binding then your own scholars could not have debated the status of the Deutros. Nor would the situation be that "Few are found to unequivocally acknowledge their canonicity" as the CE attests.
And since the canon was subject to disagreement, which it was right into Trent, and if that was blasphemous, then you must include Catholic scholars in your charge of blasphemies. Yet which your pope seems to have forgotten to include that in Exsurge Domine.
Moreover, the issue was that the well -substantiated fact of disagreement on the status of certain books was contrary to the premise that the canon was settled in 5th c., and "that the African councils, like any other council, were binding on the Church" and thus establishing uniformity and excluding freedom of disagreement.
That is simply not true was the main issue.