What does that even mean? Obviously breasts were not there from day one as in on an infant. But it also happened naturally, as in without the help of science and medicine. I'm happy that tran men and women have the ability now to have a physical body that matches their actual gender, even if their original one didn't, but that doesn't mean that everyone is going to or should be expected to be attracted to them as they would someone who was born in a body that did match their gender.
So you will not date a perfectly healthy cis women just because she had hormone problems in puberty and had to take pills to help developed correctly ?
How about people who take growth hormone because they were too small as children ?
Any single person who ever took medicine that naturaly would be dead ?