You can’t push the frontier of science if you leave all the ethicists behind.
He will probably turn up eventually, at which point he’ll likely need to submit to an investigation from China’s Ministry of Science and Technology.
The results of that investigation could shape the future of human gene editing — if China punishes He severely for his actions, it could deter other scientists from pursuing the “ask forgiveness, not permission” route with their own research. Leniency could have the opposite effect.
Regardless of how that investigation plays out, though, He has pushed humanity across a line that it can never uncross. We now live in a world in which the first people with CRISPR-modified genes have been born.