" The above is a valid translation."
A valid translation of an invalid addition to early Greek texts. It promotes a baptism ritual that none of the Apostles or early Church "Fathers" used.
Also, strange that Jesus would forget to disclose he actually was God not the son of God.
In any case as you point out, it does not support the Trinity concept since there is no dispute among various Christians that there is God, Jesus the Son of God and the Holy Spirit.