In my mind, the work of the Lord is somewhat hindered
Who decided this was the "work of the Lord"?
If a Satanist group decided to set up a ritual to, by proxy, dedicate you and your loved ones to Satan after your death, how would you feel? Would you react in behalf of your deceased loved ones, knowing this is what they would want and expect of you.
It was decided and revealed by the Lord Jesus Christ through the Prophet Joseph Smith:
Doctrine and Covenants 124:28-30
28 For there is not a place found on earth that he may come to and restore again that which was lost unto you, or which he hath taken away, even the fulness of the priesthood.
29 For a baptismal font there is not upon the earth, that they, my saints, may be baptized for those who are dead—
30 For this ordinance belongeth to my house, and cannot be acceptable to me, only in the days of your poverty, wherein ye are not able to build a house unto me.