It’s a bill to create technical standards by which anyone can mark their digital files with a rough analogue of a robots.txt that says “don’t train on this file,” and a requirement for AI training to obey that standard. It’s for everyone, because copyright is for everyone who creates pretty much anything.
Define “breast.” On the one hand, rows of nipples (cats and dogs) or multiple nipples from an udder (cows, elephants) don’t really seem “breast” like.
And for sure platypus excretions from their skin, without nipples, is certainly not breast like.