They don’t think they are anything but Latter Day Saints. Their modern doctrine make it clear.
I really hate piling on them but they make clear they are the perfect religion and all others are inferior, with choices to be made in some distant state.
If all Christians are apostacy and Whores of Babylon, why would they suddenly in this day, claim parity? Doesn’t make sense, unless one is, by subterfuge pretending to a thing, they are not, if only to draw prey for quartering through shame of error.
Christianity is a good marketing ploy. If people see them as ‘just another Christian church’ then it is easier to get converts.