It looks like it boils down to two things: the proponents say the misinformation on the part of the formula industry needs to be stopped, whereas the opponents

It looks like it boils down to two things: the proponents say the misinformation on the part of the formula industry needs to be stopped, whereas the opponents claim such a regulation would stigmatize the women who can't breastfeed. Or don't want. But when you think about it, what you give to the baby is pretty much a private thing. The main people who can "stigmatize" you will be your family, and they can do so for a variety of reasons, not just breastfeeding. I can't imagine a stranger on a street telling a woman she should breastfeed instead of giving the baby a bottle (which may contain her own milk btw). I can't imagine a husband telling such things to his wife. But the mother's mother, or mother-in-law - they could easily say so. So it essentially boils down to whether your family is supportive or not. Preventing Nestle from spreading misinformation is a completely different thing.