Nothing reactionary in the Council of Trent! It's a farce to pretend that the Catholic church did not react politically and theologically against Protestant.
Certainly the Council of Trent put limits on what is acceptable theologically in the Church, but no, it did not change substantively Catholic theology. Protestants need Trent to be the boogey man so that have a justification of their existence. This explains why Protestants are so stuck in the 16th Century.