The quotation from Leviticus should be understood as reflecting the times during which it was written. What was being emphasized was that the Israelites were a relatively small group of people who were under constant threat of being overrun and absorbed by the nations that surrounded them, such as the Egyptiams, the Philistines, the Amalekites and others. One of the ways to protect themselves was to follow God's injunction to "increase and multiply," something that is kind of hard if the population is engaged in same sex relationships. If you think the way that the Israelites of the times were thinking, it becomes easier to understand. What they wanted were babies, particularly male babies, that could grow up to defend the nation. The more the better.
I would think that this injunction, like the others quoted in the open letter to Dr. Laura, can safely be ignored. It, and they, simply doesn't reflect the reality of modern times, and the needs of the various diverse people who live on this planet. :2hands: