“If the Septuagint, which contains the Deuterocanonicals in question, was quoted 2/3 of the time in the New Testament when referring to the Old Testament I think they should deserve a hearing.”
The Apocrypha is never cited as the word of God in the NT.
The Lord certainly had knowledge of the Deuterocanonicals:
Matt. 6:19-20 - Jesus' statement about laying up for yourselves treasure in heaven follows Sirach 29:11 - lay up your treasure.
Matt.. 7:12 - Jesus' golden rule "do unto others" is the converse of Tobit 4:15 - what you hate, do not do to others.
Matt. 7:16,20 - Jesus' statement "you will know them by their fruits" follows Sirach 27:6 - the fruit discloses the cultivation.
Matt. 9:36 - the people were "like sheep without a shepherd" is same as Judith 11:19 - sheep without a shepherd.
Matt. 11:25 - Jesus' description "Lord of heaven and earth" is the same as Tobit 7:18 - Lord of heaven and earth.
Matt. 12:42 - Jesus refers to the wisdom of Solomon which was recorded and made part of the deuterocanonical books.
Matt. 16:18 - Jesus' reference to the "power of death" and "gates of Hades" references Wisdom 16:13.
Matt. 22:25; Mark 12:20; Luke 20:29 - Gospel writers refer to the canonicity of Tobit 3:8 and 7:11 regarding the seven brothers.
Matt. 24:15 - the "desolating sacrilege" Jesus refers to is also taken from 1 Macc. 1:54 and 2 Macc. 8:17.
Matt. 24:16 - let those "flee to the mountains" is taken from 1 Macc. 2:28.
Matt. 27:43 - if He is God's Son, let God deliver him from His adversaries follows Wisdom 2:18.
Mark 4:5,16-17 - Jesus' description of seeds falling on rocky ground and having no root follows Sirach 40:15.
Mark 9:48 - description of hell where their worm does not die and the fire is not quenched references Judith 16:17.
I'm sorry, but that simply is not true. The bigger issue is the authority by which Canon was established and the Protestant necessity to undermine that Catholic authority. It is the only rational condition under which they can exist.