“on the surface” its completely against the word of God for how He designed humans being created.
So, sure if a person doesn’t care to believe in the word of God, than nope nothing wrong with it.
Not everyone believes exactly as you do, And many people don’t believe that God would deny a child a healthy life, if it could be achieved by science.
(In addition, I don’t recall God addressing the issue of genetic engineering or gene therapy. He didn’t address nuclear energy or space exploration, for that matter..)