Not true at all. There's a HUGE difference between a man-become-god (the LDS god) and a God-become-man (the historic Christian Jesus).
Jesus Christ posseses all qualities all the Father. (If you disagree then please describe a quality that he does not have which God the Father has).
Character qualities, yes! Manifestation qualities, no. The Father is spirit, and must be worshipped in spirit (John 4)...the Book of Mormon & the Bible agree on this (BoM- Alma 18:24-28 & 22:9-11...God is SPIRIT). NOWHERE DOES IT SAY IN THE BOOK OF MORMON THAT THE FATHER EVER HAD A PHYSICAL HUMAN BODY! If that was at least within the range of being "the fulness of the everlasting gospel" (what D&C calls the BoM), it would have been mentioned if relevant or important. (It wasn't.)
Whereas Jesus took on a human body (doctrine of incarnation).
Therefore, God the Father has always been God, he has always been omniscient, divine, all powerful, etc.
Well, I'm glad you've come to this conclusion. But how many actual LDS, including the original one, actually believed this all of their/his lives/life?
To quote Joe Smith: "I will go back to the beginning before the world was, to show what kind of being God was. . . . God himself was once as we are now, and is an exalted man, and sits enthroned in yonder heavens . . . it is necessary we should understand the character and being of God and how he came to be so; for I am going to tell you how God came to be God. We have imagined and suppose that God was God from all eternity. I will refute that idea, and take away the veil, so that you may see. These are incomprehensible ideas to some, but they are simple. It is the first principle of the Gospel to know for a certainty the Character of God, and to know that we may converse with him as one man converses with another, and that he was once a man like us; yea, that God himself, the Father of us all, dwelt on an earth, the same as Jesus Christ himself did; and I will show it from the Bible. Here then, is eternal life--to know the only wise and true God; and you have got to learn how to be Gods yourselves, and to be kings and priest to God, the same as all Gods have done before you, namely by going from one small degree to another, and from a small capacity to a great one..." (Teachings of the Prophet Joseph Smith, pp. 345-47)
“the same as Jesus Christ himself did”
I would emphasize that part of the quote! Which matches Ostler’s position and mine.
Bye the way, the Book of Mormon uses heavily throne imagery, coming into the bosom of the Father, etc., which incidentaly resembles 2nd temple Jewish imagery which heavily focused on a corpeal God.
:)