“there is nothing wrong with IVF,”
Yes, there is. https://www.catholic.com/video/why-is-in-vitro-fertilization-wrong
I dont care one whit about what the Catholic church says on the subject.
IMO if no embryos are discarded and all are implanted, there is nothing ethically wrong with it. To say otherwise is to argue that no medicine should be taken for anything, and only faith healing should be used.