Every religion has its own exclusivity and its own doctrinal beliefs.
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Then if you worship the same “Christ” as the LDS, you do not worship the same Christ as Traditional (incl. Catholic) Christianity.
There are minor doctrines and there are fundamental doctrines (the ones in the Creeds). If one rejects creedal doctrines then they are a heretic.
The LDS worship a different Christ. Even their own prophet admitted that. Why can’t you?
Mormons are Mormons. They do not and should not make apology for that. Their God and mine are the same.