I am still puzzled, masala :)
You are not saying that mothers arrive at pregnancy unaware that some babies are formula fed and some babies are breastfed, now are you?
You're not saying (surely) that you, and they, rely on an HCP presenting 'options' ? And without this, you would not have a clue how to feed your baby because you did not know what the 'options' were?
Culturally, formula feeding is overwhelmingly dominant. Massively so. Over 95 per cent of babies in the UK have formula at some point. There may be a certain amount of official 'approval' for breastfeeding, but it is 'approved' of with restrictions. Our culture places limitations of its approval - babies only up to a certain age (which differs according to the individual doing the approving!), breastfeeding in certain places only, breastfeeding in positions which don't reveal flesh at all, breastfeeding only at certain frequencies, not much at night....etc etc etc.
You're at it yourself. You talk, disapprovingly, about mothers removing their tops to breastfeed their babies - I have never, ever seen a mother remove her top in public to feed her baby. I suspect you mean opening her clothing - this is, I'm afraid, necessary in order to permit access to the breast :) Yet you see this, and you say these mothers are 'smug'.
Sorry, but this feeling of 'unbalanced' info is definitely inside your head :(