I don't see the problem. Girls are subjected to sexual images from such a young age, it horrifies me that young girls are being taught that boobs are only for sex, and that's it ok to get them out on display all the time, there are padded bikinis aimed at girls ffs.
Anything that promotes that the real reason we have breasts is as a way of feeding your baby can only be a good thing as far as I can tell. The only reason people are weirded out is because as a society we wrongly see breast feeding in a sexual light - totally totally wrong and a sad state for our society to be in!