Oh yes it is...
For all the salvific influence of the Blessed Virgin on men originates, not from some inner necessity, but from the divine pleasure.
There is no salvific influence of Mary who was blessed...
963 Since the Virgin Mary's role in the mystery of Christ and the Spirit has been treated, it is fitting now to consider her place in the mystery of the Church. "The Virgin Mary . . . is acknowledged and honored as being truly the Mother of God and of the redeemer. . . . She is 'clearly the mother of the members of Christ' . . . since she has by her charity joined in bringing about the birth of believers in the Church, who are members of its head."502 "Mary, Mother of Christ, Mother of the Church."503
That puts quite a weight on Mary's perceived role in your salvation...Apparently she's not only the mother of the redeemer who died on the Cross, she's the mother of God the Father as well...
969 "This motherhood of Mary in the order of grace continues uninterruptedly from the consent which she loyally gave at the Annunciation and which she sustained without wavering beneath the cross, until the eternal fulfillment of all the elect. Taken up to heaven she did not lay aside this saving office but by her manifold intercession continues to bring us the gifts of eternal salvation . . . . Therefore the Blessed Virgin is invoked in the Church under the titles of Advocate, Helper, Benefactress, and Mediatrix."512
As you can see your catechism claim all salvation comes thru Mary...
725 Finally, through Mary, the Holy Spirit begins to bring men, the objects of God's merciful love,107 into communion with Christ. And the humble are always the first to accept him: shepherds, magi, Simeon and Anna, the bride and groom at Cana, and the first disciples.
A Christian can almost get sick reading this junk
2677 Holy Mary, Mother of God: With Elizabeth we marvel, "And why is this granted me, that the mother of my Lord should come to me?"36 Because she gives us Jesus, her son, Mary is Mother of God and our mother; we can entrust all our cares and petitions to her: she prays for us as she prayed for herself: "Let it be to me according to your word."37 By entrusting ourselves to her prayer, we abandon ourselves to the will of God together with her: "Thy will be done."
You are completely trusting Mary for your salvation...
Pray for us sinners, now and at the hour of our death: By asking Mary to pray for us, we acknowledge ourselves to be poor sinners and we address ourselves to the "Mother of Mercy," the All-Holy One. We give ourselves over to her now, in the Today of our lives. And our trust broadens further, already at the present moment, to surrender "the hour of our death" wholly to her care. May she be there as she was at her son's death on the cross. May she welcome us as our mother at the hour of our passing38 to lead us to her son, Jesus, in paradise.
After you are dead, Mary's going to lead you to Jesus...
1053 "We believe that the multitude of those gathered around Jesus and Mary in Paradise forms the Church of heaven, where in eternal blessedness they see God as he is and where they are also, to various degrees, associated with the holy angels in the divine governance exercised by Christ in glory, by interceding for us and helping our weakness by their fraternal concern" (Paul VI, CPG § 29).
So Mary shares the head of the Church with Jesus...And ridiculously, God stands off to the side...
That's a goddess if ever I saw one...
I do not wish to get into a point by point discussion regarding Catholic teaching on Mary. I realize there are good Christians, including good friends and members of my family, who have a deep love for Jesus but have different beliefs on the role of Mary. I respect those beliefs.
There are a couple of statements you made that differ from Catholic teaching, though, that I would like to clarify.
First, the Church does not profess that Mary is the mother of God the Father. It is only through her motherhood of the Son of God, the Second Person of the Trinity, that she can be called the mother of God.
Second, to say that all salvation comes through Mary or that Mary heads the church with Jesus overstates what the Catechism actually says.
CCC 970 teaches how Christ shares His priesthood as follows:
“Mary’s function as mother of men in no way obscures or diminishes this unique mediation of Christ, but rather shows its power. But the Blessed Virgin’s salutary influence on men... flows forth from the superabundance of the merits of Christ, rests on his mediation, depends entirely on it, and draws all its power from it.”513 “No creature could ever be counted along with the Incarnate Word and Redeemer; but just as the priesthood of Christ is shared in various ways both by his ministers and the faithful, and as the one goodness of God is radiated in different ways among his creatures, so also the unique mediation of the Redeemer does not exclude but rather gives rise to a manifold cooperation which is but a sharing in this one source.”514 (2008, 1545, 308)
As you can see, this statement does not equate Mary with the Incarnate Word.
These are not the droids you are looking for.