Way back when I used to be on Mormon Matters, one very common complaint from Practicing-but-Not-Believing Mormons was that the LDS Church was ‘arrogant’ or ‘hurtful’ because they believed they were the ‘one true’ (or at least ‘most true’) religion. (Specifically, the claim of being the only currently existing Church organization started by Jesus Christ via a prophet was a particular sticking point.)
So I wrote a short post asking for some additional dialogue on this point. But I never posted it, so here it is now a few years too late: