So GMO babies aren't a thing yet, but if sperm donation is a thing, why don't they test sperm for desirable traits before fertilization? They seem to pick the samples individually but don't test if the sperm they pick will be what they want, you can't do anything about the eggs but at least having control on half of the procedure is better than just going in blind yeah?
https://youtu.be/s8KCOgLM4AQ?t=389