I think a really exceeding important clarification here is he edited the genomes of human embryos, not babies. Babies are already born humans, embryos are a clump of cells that will become a baby in the future. I do not condone gene editing without consent, which is what he did, and yes there is lots of questionable ethics around gene editing but he did NOT experiment on babies. This should be made clear especially in a science based community.
Implying that babies are the same thing as embryos is fundamentally incorrect, in the same way a caterpillar is not a butterfly and a larva is not a fly, the distinction is very important.