I don't disagree, and you are right in that the best "theologians" are hardly ever the most educated but rather the ones who pray unceasingly. This is who the Holy Fathers of the Church are and this us who the Saints who followed them are.
As far as Holy Scripture goes: It serves as many things but its primary use case is liturgical, and it was formulated, preserved, and passed down through the ages via the Church primarily through its liturgical tradition. There is no Holy Scripture without the Church and of course Holy Scripture states that the Church (Christ's body, led by Jesus Himself... A real, physical thing just as Jesus was a real physical human) is the pillar and ground of Truth.
Christianity has an incredibly rich Liturgical tradition that has been (mostly) discarded in the West due to many things but not in the least the doctrine of "sola scriptura". Doctrine is not something that should differ among believers and when it does we get something like the 100s if not 1000s of "slight" variations we see today-throughout the world. This is not the will of God, for His flock to be disunited.
Further, It is in Christ's Church where He is ever present and salvation is found, and it is in His Church where Holy Scripture is understood and taught. If the Bible was all we needed Christ would of told us so but instead He asks us to do a lot of things (the sacramental life found in His Church) but for some reason many disregard the sacraments (which are full of His Grace). The Apostles are witnesses to the Gospel message as are the many Saints to follow. This message wasnt just washing away humanities sin but defeating death through His death and uniting humanity with the divine and removing, as it were, the angel guarding paradise allowing for constant communion with Him eternally (which starts now in this life in His Church).
Christ worked through His Apostles just as He works through His Saints even up through today. It is the Saints who ran the race, persevered until the end, and emulated Christ. It is those Holy men and women who have preserved what it means to be a Christian or rather "the faith ONCE delivered to the Saints".