There is nothing such as riskless technology, but you can't escape some risk anyway.

Tech like this gives some people a chance to be born. If they aren't born, this may damage the rest of the world in subtle, very hard to predict way. The invisible graveyard of medicine, caused by risk aversion, is real. In the name of safety, you may miss out on the next Freddie Mercury or David Attenborough, or Jonas Salk or Paul Erdös.

Also, the 5-10 generations you mention is 150-300 years in current humans. It is very unlikely that biological science will stagnate on current level of knowledge and blindly repeat beginner mistakes from 2026 for 150-300 years.

For comparison - 150 years ago, germ theory was still a contested newcomer. 300 years ago, medicine still believed in Galen's humor theory.