This is very true AcademicMum....breast is best is the popular catch phrase, but there is not always the support to back it up....prior to birth and afterwards.
Part of the problem is many women do not have the experience of someone they know breastfeeding successfully. The pendulum swings back and forth over the years and currently the push for breastfeeding is at a high point. The key is to provide current and correct information to expectant mothers and families.
Again, I think you can impart the correct information to women, even when they have stopped breastfeeding, in a nonjudgemental way so as not to point fingers or cause them to feel badly about the decision. It is in how things are worded.
By not doing so, when an opportunity arises...(you don't have to go out of your way), many women will continue to receive incorrect information as it will continue to get passed on. After all, most new mothers probably receive much of their support, whether correct or incorrect, from their friends and family members who already have children. Sadly also from uninformed midwives and HVs at times.
I can't tell you how many women will say they were told by their sister, mother, friend, etc., you will crack and bleed, expect to get really sore, that baby needs formula or solids because they are a big baby, formula will help baby sleep through the night, the reason baby wants to eat every 2 hours is because your milk must not be satisfying baby, baby spits up because your milk must be sour, you're not getting much with pumping so you must not be producing enough, there is no reason to breastfeed after 6 months, the list goes on and on.