Exactly: "if they came with fake tins of formula..." THAT would be a concern I agree... but a bottle in itself doesn't really worry me personally because you could use it as a tool to discuss that the best type of milk to put in it is "mummy's milk".

My DD had Baby Born that came with a bottle... but she has since seen me BF her two brothers so i'm confident that she will naturally follow my lead when she herself is a mum.

Like someone said: childcare/school will most likely have dolls with bottles... you will never be able to eradicate them so maybe it's better to work with 'em. Nothing substitutes playing WITH you child and talking talking talking!