Many parents expressed anger at the permission form they must sign to bottle-feed, with some saying they felt like it was admitting they were a bad parent.
While some breastfeeding advocates undoubtedly put too much pressure on women to breastfeed, similarly there is a certain segment of women who try to push women to bottle-feed.
When they can disagree with your decision to bottle-feed on many fronts and you "explain" or defend your decision, you have given them another opportunity to change your mind.
If a woman doesn't feel comfortable breastfeeding just about anywhere (anywhere another woman would bottle-feed a child), then she is more likely to fail.