One of the things that comes up in “CREVO” arguments is that even a “desirable” mutation would not show up in MULTIPLE individuals in the same time frame in a given population to better insure passing it to offspring. However, a virus can infect a large portion of a population, resulting in genetic modifications that are indeed likely to be passed down amongst survivors.
Wouldn’t those changes have to be made in the sperm and egg not lung or eyeball?