According to some, the answer is yes. “the Mormon church clearly condemns other religious systems. Those Mormons who complain about poor treatment should familiarize themselves with their teachers’ words.”
However, the statements made by LDS Church leaders about other religions are of quite a different nature than that which is said about the LDS Church, and the LDS Church never comes out and criticizes another specific religion. Mormons do not picket other churches. Mormons do not go around condemning members of other churches, saying that they are going to hell. But all this is done on a frequent basis to Mormons. While the LDS Church, as far as I know, has never published any piece of literature focused on criticizing other religions, there have been at least 1,931pieces of anti-Mormon literature published between 1830 and 1989.
There has never been a Mormon-produced pamphlet called “Catholicism is False” or “Why Evangelicals Are Wrong.” That isn’t to say there aren’t Mormons who are openly critical of other religions. I suppose you could say some of the content on this website is critical of non-Mormon religions, although that isn’t the intent. The intent here is not to tear down but to educate, although sometimes that education involves asking rhetorical questions that could be construed as being critical.
Mormons don’t believe members of other churches are going to hell, even if they die without ever becoming a Mormon. We believe all human beings who have ever lived, who are now alive, and who will ever live will have a legitimate, clear, and easily understandable chance to accept Christ and his gospel, and that if someone doesn’t accept it, it will be completely obvious to them that they weren’t tricked into not accepting it, but that they made a distinct choice in the matter. So we don’t condemn anyone to hell, and in fact we think most people will not go to hell.
That said, we think the Mormon church is the only true church. That is, the only church authorized by God himself to administer sacred ordinances like baptism and the sacrament and the only church that has a prophet who communicates directly with God, and we don’t mince words when it comes to declaring what we know to be true. But this we don’t say this in order to condemn anybody. We believe all religions teach a portion of the truth, that all religions do good things, and that all religions have good people in them who are going to Heaven. So we’re not too stressed out or agonized about whether people accept what we teach or not. Of course we’d like everyone to accept what we teach, because we think people would be happier if they do, not to mention safer in terms of salvation, but if people don’t accept the gospel as we teach it here we’re pretty sure they’ll accept it after they die.