That depends on what "societal pressure" means. For somebody who is well-educated with a good support network, a supportive spouse, and the ability to get help if she needs it, I think that's a load of bunk.
But recently I was thinking about women who come from big families in which nobody ever breastfed, and who have not received much (if any) education about breastfeeding. Even if they hear about breastfeeding and think they'd like to "try" it, they are often bombarded with pressure from their own families, often even their husbands, NOT to breastfeed. After the baby comes they get more of the same. If you add to that a situation where a woman lives in an area where LLL and/or a good LC isn't avilable to her (or if they're available but she doesn't know it), you have somebody who is set up for a very stressful situation.
For a mother who has no support, lots of negative messages from family and friends about breastfeeding, little education, and few resources, I'm actually not sure that breastfeeding *is* the best thing for her and her baby. In terms of physical health, breastmilk is still best. But if breastfeeding is going to be a source of major strife within a family, how will that affect the other aspects of that mother's parenting? If feeding formula means that the woman gets more parenting support from her husband, extended family, friends, etc...wouldn't that be better for the mother and baby in the long run?
I go back and forth on this. For starters, I think that the cases in which a woman's social environment is truly bad for breastfeeding are less common than some people would have us believe. And I also don't like the fact that the social pressures on a woman not to breastfeed are based on ignorance. But I do worry about women who are truly facing negativity within their own social networks, and the effect it has on the mother and baby.
At any rate, I don't think we should dismiss societal pressure as "lame." Societal pressures are real and have real effects on people. How much of an effect is reasonable? That's debatable and dependent on what kind of pressure we're talking about.