embryos are screened prior to implantation when in vitro is used. This issue will not be relevent, because if there is something genetically wrong with the embryo it will be discarded and not implanted. This is why I don’t agree with the in vitro process.
That bothers me, because what this couple needs is for the husband to get some actual therapeutic help with getting his own sperm "up to speed" so to speak, rather than having his own father take his place.
That's one of the (many) ethical problems with all the artificial reproductive techniques: once you rely on them, nobody's motivated to try to solve the original problem, which is to aid this husband in regaining his natural fertility.