This was not born child. It was a frozen embryo that did not belong to them. Grandparents fought for it for selfish reasons of having a grandson while knowing, that the child will be lonely and possibly dysfunctional.
The parents statement assumed, that
1) child will more likely to be dysfunctional
2) grannies knew about it
Otherwise it does not make sense. I referred to the statement's inability to back either of these assumptions.