Some mormons believe that. It’s not doctrine, according to President Hinckley.
What is doctrine is the somewhat enigmatic statement: what Man is, God once Was. What God is, man may become.
Some mormons interpret that statement like you said, others, like myself, think of it as what the Eastern Orthodox call “deification.”
When you think about it, it’s not much different than what Anasthasius said:
God became Man, so that Man might become God.
God became Man (or as Man is, God once Was) refers to Jesus taking on flesh and walking among us, right?
So that Man might become God (as God is, man may become) refers to deification, i.e. that we may become one in mind with God (see the intercessory prayer which you perversely refuse to address despite Parker’s patient efforts) and know God “as we are known” (see 1 Cor chapter 13).
Does that mean we shall build worlds? Does it matter? What we do, we will do in service to God.