Reminder:
If, when and how people choose to procreate is none of anyone else’s business.
It’s not your business if someone else uses IVF to conceive. It’s not your business if someone else uses sperm or egg donors. It’s not your business if they use a willing surrogate. It’s not your business if they adopt. As long as the reproductive process is left to consenting adults then you should keep your damn mouth shut about it.
These factors are all entirely unrelated to whether a person is fit to be a parent and irrelevant to this discussion.