I’ve long felt very conflicted about NFP because while Church has said it is perfectly fine, I feel (and this is very much not a judgement on anyone, I want to stress!), it has always been a little bit of a cop-out.
Of course the Church cannot endorse artificial contraception, quite rightly, for a host of reasons with which I’m sure we are all familiar - one reason being that the ‘contraceptive mentality’ fundamentally changes our views of sex and family life (leading to all sorts of potential problems, as well as temptations to sin, etc, etc).
I am all for women (and men) having a good knowledge of their bodies’ inner workings, especially I think within a marriage, but surely NFP inherently implies the same sort of mentality, though maybe to a smaller degree, as any kind of sinful means of family planning? It seems technically ‘open to life’ but the great hope of only being intimate at certain times is that the possibility is as tiny as can be managed.
I do not want to go into personal details (and I’m sure you’d not want that either ) but my DH and I both feel that if we as a couple are not entirely open to the possibility then we should abstain. Otherwise it sort of feels that for us we are flouting the ‘spirit of the law’ if not its letter. It doesn’t mean marital intimacy should only be procreative at all of course! - but deliberately timing things so that it is almost certainly not is kind of skirting the edges of things - in our view anyway. It is our decision to be open to the possibility, or not, and God’s as to whether it is fruitful.
I’m not condemning any couple who practices NFP whatsoever - it’s definitely in every conceivable way (pardon the pun!) a better alternative to artificial BC - and each couple has to make their own decisions about what is possible and advisable. The news in the OP should be celebrated in my view. There’s nothing wrong with it at all - just giving another slightly different perspective.