A “cult” initially was a religious group or institution that was based on another religion but which added to it. Thus, ancient Christianity was based on the Law of Moses, but claimed to fulfill, or supplant, it with the coming of Christ. It kept the scriptures, but added its own scriptures to it. And though the LDS church is based on ancient Christianity, it does not supplant it; however, it does add scriptures to its canon that other Christians don’t have.
I am well versed in LDS doctrine and policy, and I’m aware of the social and theological issues facing homosexuals. The church made some awful mistakes in the past by implementing programs dreamed up by psychiatrists in the 70s and 80s. Such programs involved barbaric shock and other therapies which not only didn’t work, but added substantially to the psychological well being of those subjected to it. These therapies were carried out with the consent of the subjects, but was a horrible mistake.
In recent years, the church has emphasized sexual abstinence as the primary recourse for homosexuals.
Regarding the sealing of LDS families for eternity in temples, the church realizes that retention of homosexuals is a problem. Many homosexuals leave the church on their own volition and, of course, the church is bound to comply with such requests. We also realize that God is a God of immense compassion and mercy. Certainly he will temper justice and mercy, taking every component of our lives into consideration when judging us. As for sealing and families are concerned, we don’t believe that we cease to exist at death. Many things that aren’t completed in this life are rectified in the next. One reason for a Millennium is to tie up all the loose ends throughout the ages. Many people who in life never heard the gospel message will hear it in the Spirit World and, as Peter said, “that they might be judged according to men in the flesh, but live according to God in the spirit.” (See 1 Peter 3:18-20, 4:6)
After death, many homosexuals will continue to work out their salvation and their deviancies. In the resurrection, there will be no imperfections and all men/women will be perfect. Those holding the keys of binding in Heaven and on Earth will work with those on the other side of the Veil to achieve the joining of families all the way back to Adam. Again, there will be no denial of resurrections or eternal suffering in a burning hell. Life on Earth is not supposed to be easy, but we LDS believe we’ve been preparing for it for hundreds, if not thousands, of years. Homosexuality, chronic pain, genetic imperfections, and all the problems of mortality will eventually be worked out.
Again, Peter wrote: “ Beloved, think it not strange concerning the fiery trial which is to try you, as though some strange thing happened unto you: b ut rejoice, inasmuch as ye are partakers of Christ's sufferings; that, when his glory shall be revealed, ye may be glad also with exceeding joy.” (4:12-13) And: “Wherefore let them that suffer according to the will of God commit the keeping of their souls to him in well doing, as unto a faithful Creator.” (4:16) The whole idea was that a man “no longer should live the rest of his time in the flesh to the lusts of men, but to the will of God.” (4:2)
All of the above may sound “cultish,” but so too did the gospel of Christ challenge every facet of what the ancient apostles believed about their world. In fact, Jesus remained for 40 days after his resurrection teaching the apostles and others of his disciples the “mysteries” of the Kingdom of God. And none of it was written down or conveyed to future generations. In fact, in a number of recently translated extrabiblical accounts, the references tend to involve the coming apostasy, the fate of the apostles and the sealing of families and the dead.