I do not believe in desexing so young, a personal thing, same as back when my boys were babies and circumcision was the norm I said no. That they would be given the choice themselves later in life.
I feel in the case of very young pups that waiting till they are older, when lungs and body are a bit more mature that then having an anesthetic and surgical procedure is better for them. We are all entitled to our opinions and this is mine, always has been.
We are not in a city or large town where overpopulation is a problem like bigger areas.
New Owners will be well quizzed with innocuous sounding questions to see where they stand.