The father of a child has a special Scriptural responsibility to raise that child in the faith of Christ and in so doing becomes their Father-in-Christ as well as their biological or adoptive father. And it would violate the Fifth Commandment for a son to call his father “brother.” And furthermore you continue to miss the point our Lord was making in the Gospel according to Matthew, that we must not take pleasure in honorific titles such as father or teacher.
And indeed, in the same epistle of Corinthians Paul talks about those chosen by God for different ministries, including teacher.
Thus, as a Christian pastor, my prescription for you is this: before I discuss this matter with you any further I request and require you to read or reread Deuteronomy chapter 5, which contains the Decalogue, and the First Epistle of Paul to the Corinthians, and the Gospel of Luke and its sequel, Acts, both by St. Luke the Evangelist, which restates the verses you refer to in the Gospel of Matthew and contains some additional content I feel you need to read, and then I will discuss this with you if you commit to also reading Ecclesiastes and Proverbs. I also require that you affirm the Nicene Creed and pray the Lord’s Prayer, and the Jesus Prayer, the latter being “Lord Jesus Christ, Son of God, Have Mercy on Me, a Sinner” and the prayer “Holy God, Holy Mighty, Holy Immortal One, Have Mercy on Us.”
If after doing all of that you still remain convinced that Christ our True God intended for us to not call our biological or adoptive parents “Father” or “Dad” or “Daddy” or “Papa” but rather “Brother”, I will discuss the matter with you further and I might even be prepared to concede to your argument, but in the absence of you reading and praying those scriptures and prayers I have required as a condition for further discussion of this topic, I cannot discuss this with you as I believe you have misread and misinterpreted the Gospel of Matthew, and in discussing the matter with you in a public forum, I would be facilitating the propagation of a doctrinal error.
God bless you.