Breastfeeding in public 🍼

I recently read an article where people were mad that Chrissy Teigen posted a picture of herself breastfeeding. I just don’t understand why people get so angry and say “put that away” but nude scenes in a movie or porn for example don’t seem to cause as much as a controversy for people. Chrissy posed for playboy and I don’t remember her receiving as much backlash in comparison to her posting the pictures of her breastfeeding. If you are against breast feeding in public I’m curious to know why, or if you know why people get upset over it feel free to leave a comment because I’m curious as to why it causes so much controversy.