1"Becoming a god" in the sense of joining an already crowded pantheon isn't really the same thing as becoming the single supreme god of a separate universe. I think that particular LDS doctrine is unique or at least highly unusual.
2But the claim under discussion isn't of a unique mythic narrative (whether true or false), but a unique spiritual insight. To me, real spiritual insights are applicable to life in our world. They might be linked to mythic narratives, but in the end they have to apply to here and now. For instance, Christian narratives of God's forgiveness (as expressed, for example, in the parable of the Prodigal Son), have inspired some people to acts of forgiveness in their own lives that, they claim, have helped them cope with having suffered intolerable wrongs. Of course, that idea is not easy to put into effect, and it is not unique to any one faith.
3So, what actual spiritual insight flows from the narrative of the elite becoming gods of their own universes after death? If we posit that as true, what does it help us understand or achieve in our own lives? How does it differ, in application to real-world decisions, from the promise of heaven or the threat of hell found in the narratives of other Christian sects?
Respectfully,
Myriad