There are a whole bunch of stories about people with permanent pain after a vasectomy, that's a lot more terrifying.

I consulted on some tech for this company https://www.thereversalclinic.com/

I'm not in medicine and can't speak to how effective it is, but I'm guessing there's a reason why he's still in business.

i supposed it is relatively straight forward to extract directly from the testicles and go with in-vitro fertilization and implantation for planned parenthood