aitch, I have a feeling I have had to come on here and put similar corrections to the mumsnet 'body' too......
The vast majority of women can make enough milk to sustain their babies. But it is well-known among people with experience that a small number may have that ability compromised - this can be (for example) an underlying untreated condition such as chronic anaemia, or an event that happens round about the time of birth that means the mother and baby are separated and don't get off to a good start (some women overcome a bad start; others never really do), or medication (some fertility drugs are long-lasting in their effect, for instance, and have been associated with poor breastfeeding production, yes, even months after they have been used)....anyway, suffice it to say that while most cases of 'insufficient milk' are either misdiagnosed or brought on by poor help and support, there are some cases which happen for other reasons (and for reasons which we don't always know, as well).
There is a lot we don't know about sore nipples. Latch is vital, but some nipples, and some babies mouths, are such that getting the attachment comfortable is virtually impossible, at least at first. I have seen nipples like this and I have seen babies' mouths (and tongues) that add to the challenge. In addition, I have also seen a very small handful of mothers and babies where everything looks great, but the mother is still in dreadful pain. This is unusual, and with the right help, most mothers can have a pain-free feed, but a very few can't.
It does no one any favours at all to deny this.
Anyone who has experience working with breastfeeding mothers over time knows there are some instances where you can't really explain what's been going on to make it so difficult.
Fixing breastfeeding is a clinical speciality, albeit a new one, and even if 100 per cent of women breastfed, and everyone felt great about it, and didn't find it got messed up with daft ideas, we would still need to give extra help (or even donated human milk in some circumstances) to the ones who had the greatest difficulties.