So do Muslims. They both claim the original ways got corrupted and they have a prophet who came back to restore the “true” faith.
Although Mormons seemingly/arguably revere the Bible and Jesus more than Muslims do, the entire religion is basically alien to Christianity, even being polytheist (Islam is still Monotheist like Christianity)
It’s like Joseph Smith wanted to create a religion for personal power, so just started with Christianity as a foundation and then completely distorted it beyond recognition, that it basically doesn’t resemble the original faith any more than Islam does