Neither "JustforCatholics.org" and the New Catholic Encyclopedia are inerrant, nor necessarily scholastically authoritative. I do not know a single theology or Church history that would accept them as a valid source.
In reality, St. Jerome did state that he knew of no Jews who considered the Deuterocanonical books as a part of Jewish canon or Scripture, but St. Jerome was not asked to second guess or validate the decisions of the Council of Rome or the directive of his Pope to translate the listed books. He stated numerous times in his later writings that he did consider them to be Scripture.
Peace be with you
Documentation please of the "numerous times in his later writings that he did consider them to be Scripture," and that the directive of his Pope to include them excluded Jerome's notes which excluded them or even some as Scripture (he also included the Epistle to the Laodiceans ), and that the Council of Rome excluded further debate, contrary to what CE and Catholic scholars state.