If that is your understanding of what "one" means, then we will be God and the "Trinity" will become a "Multiplicity". So why say we blaspheme when we declare our destiny is to be a god?
I'll take Christ's word for it. Will you?
John 17:21 That they all may be one; as thou, Father, art in me, and I in thee, that they also may be one in us: that the world may believe that thou hast sent me.
You left out the last part of the verse, “that the world may believe that thou hast sent me.” Are Mormons claiming to be Gods here and now? I assume not, so how can “being one” help the “world” believe? Being one, one church, one body, one community is how it helps. It is a prayer for unity among Christians, to be one body.
John 10:30 “I and my Father are one.”
These are the words of Christ. I believe them. Do you?
Do you take HIS word HERE?? I do!
John 6:28-30
28. Then they asked him, "What must we do to do the works God requires?"
29. Jesus answered, "The work of God is this: to believe in the one he has sent."
30. So they asked him, "What miraculous sign then will you give that we may see it and believe you? What will you do?