Well I'm sure the hubbies would think it positive that they wives have to give birth in silence

It's not done as a positive thing for the husbands, the principle behind that is that the noise (moaning/screaming etc) can be a traumatic entrance to the world for the baby. My understanding of the silent birth is that it is in the best interests of the baby, as they perceive it... to make its entrance peaceful. I can actually see how it makes sense and would love to have "breathed" my baby out as quietly as possible instead of screaming like a banshee