No, mybabysinthegarden, of course demonising formula gets us nowhere (where is formula demonsised, BTW, apart from, very, very occasionally, by some of the madder posters on mumsnet, and boy, do they get jumped on )
Nor do women want to be patronised, and your midwife was right, there.
The recommendation to exclusively breastfeed for six months is there because this gives the best health outcomes. To not state this is patronising. To state it without giving mothers info about where to get help is useless. If people think breastfeeding's qualities are reduced to nothing if they use formula then they're wrong, but I know of no literature or leaflet that tells them this - again, very rarely, you will hear of someone being told this , and if it's reported here, it's corrected.
This is probably a training issue. People whose job involves supporting bf women need to be able to correct myths, not perpetuate them.