He's probably had the same opinion for a long time. Back when Louise Brown was born, many, many Protestants took issue with IVF. At the time, a friend informed me that any child conceived outside of the womb had no soul.
I don't believe that. I have no problem with in vitro as a procedure. Where I begin to have a problem is where choices start being made as to characteristics of the baby. Nature may not meet our expectations of perfection, but who are we to imagine we can do better? Some will mention this or that genetic disease that we can overcome, which is a fine feeling, but just what we are doing--who knows.
I wonder if your friend has changed that opinion; I guess there are a lot of zombies walking around now?