What is missing from the article is the reason the startup picked eggs. The main reason is that eggs are very expensive due to the invasive procedure needed to

What is missing from the article is the reason the startup picked eggs. The main reason is that eggs are very expensive due to the invasive procedure needed to extract healthy one (and the after effect of the procedure whole not dangerous to my knowledge can require you to stay in the hospital to recover). The other thing is that even after you go through all that you get 0-30 usable eggs. There’s steep further attrition at every step of the process. A couple is lucky to end with 5 implantable blastocysts at the end of multiple rounds of egg extraction, fertilization, and cultivation. This makes embryo selection for multiple traits very weak and not really worth it. However, if hundred or thousands of eggs could easily be produced that would open up a lot more possibilities. There’d still need to be other advances—current cultivation, cell biopsy, and genetic testing techniques would not scale—but it would very much open the door. Scientists are understandably reluctant to make this point, given the Luddism on display even at a place like HN.