Didn't read the article yet, but from what you described, it sounds amazing if it can truly become a successful procedure.
And yes, I would absolutely 100% do it. I know myself, and I know my limits, and I don't think I could handle raising a child with special needs that affect brain development. If there was a way to help my baby in utero so that they would be a typically developing child, there's no way I would turn that down.
I give huge props to parents of special needs children. I know those children bring just as much - if not more - joy into their lives as typically developing kids do, but it takes a huge amount of physical, mental and emotionally energy. Those moms are far stronger than I am.
ETA: As others have said, I would never do an in-utero procedure to change hair color, eye color, size of the nose, etc. Only those procedures that have a significant impact on quality of life or brain function.