there are literally forums where trans women have figured out how to do so. There have been trans women who have breastfed.

No, some TW have taken drug regimens to cause them to develop some kind of nipple discharge while their wives were pregnant. A couple of these TW say they pumped the nipple discharge out, stored it, and later put it into bottles and forced the bottles into the mouths of hungry newborn babies who being babies with no other choice, ended up sucking the nipple discharge down. Some TW have said they put their newborn babies to their nipples and for a few moments their helpless newborn babies sucked on their nipples and in the process presumably ingested some of whatever the discharge coming out of the nipples was.

One TW who was written up in a medical case report claimed to have fed a newborn from the TW's breasts exclusively for 6 weeks - and that the baby thrived, and the baby's pediatrician heartily approved. But the doctors who wrote up the case report were gender clinic doctors with no medical expertise in obstetrics, postpartum maternity, neonatal care or lactation - and apparently no personal life experience with, or even a clue about, the care and tending of babies, either. The doctors who wrote up the case report never saw TW's baby, spoke to the baby's mother, or checked with the baby's pediatrician. For all they knew, there might not have been any baby or pregnant wife at all.

But a key fact about all these stories of supposed medical miracles is that NO scientific analysis was done of the fluid that came out of the nipples of the TW in any of the cases. Therefore, there is no evidence at all of what exactly was in the nipple discharge. The nipple discharge could have been simply pus. Most definitely it was full of the heavy-duty drugs the TW had been ingesting to stimulate nipple discharge - one of which is a drug explicitly barred in the USA for use by breastfeeding women because of the negative impacts on the health of the children. Negative impacts which the FDA says can include heart failure and death.

But whatever was oozing out of the nipples of the TW in those real or apocryphal cases, I would bet my house that it was neither colostrum nor breastmilk.

If there were any chance the nipple discharge of these TW were breastmilk or colostrum, then surely the TW and their doctors would have arranged for lab analysis to prove once and for all that it was. After all, lab analysis is not difficult or costly to do. It's done all the time nowadays.

For many years, milk banks have been testing donor milk for pathogens and to ascertain it contains the customary and necessary nutrients https://milkbank.org/faq/

A number of commercial labs now also provide of at-home kits that make getting an analysis of breastmilk easy as pie.

https://lactationlab.com/collections/breast-milk-test-kits/products/basic-test-kit

https://www.mymilklab.com/mmes/nutrition

Given how easy it is to do a thorough analysis of breast milk and all other kinds of nipple discharge, don't you find it curious that no one bothered to do it in these cases? After all, proving that what issued from the breasts of TW in these cases was colostrum and breastmilk identical to what women make - and proving that it was totally sufficient to meet the nutritional and immunity needs of newborns - would be a huge win for the QT and TRA side. It would also give TW the kind of gender validation and affirmation that the T community seeks, holds so dear and is always demanding that others provide (or else). So it seems rather telling that no one bothered to do any lab analysis. Since TP and their doctors put so much faith in the wonders of modern medical science, it's odd that taking a sample to a lab never occurred to a single person involved in any of these tales.

Also, just for the record, many people believe that the TW who claim they have breastfed their newborns actually were engaging in clearcut abuse of the babies involved. None of the TW who have engaged in this activity and have written about it or spoken to the press about it, or have been written up as medical case reports, said they were motivated by wanting to do what's best for the child. On the contrary, all said they did it for personal gratification, "the experience" and "validation" and "affirmation" of their gender identities and their "femininity." Moreover, one TW who wrote about the experience for The Stranger bragged very openly that "she" found it very sexual arousing - the biggest turn-on of "her" life, in fact - and encouraged other TW to do it for the sexual thrills. As a result, many women feel this novel form of newborn "child care" that TW have invented constitutes not just child abuse, but child sex abuse too.

In response to me saying,

there are still many differences at the cellular level

Your response is

Who the heck cares? The tissue level is identical

Really? How can the tissue be identical when tissue is made up of cells?

what's important is that my receptors behave in a way that lets my breasts be breasts, and they do.

Okay, then. But can you share exactly what you mean when you say your receptors let your "breasts be breasts"?

BTW, perhaps it's my twisted mind, but the phrase "let breasts be breasts" immediately reminded me of the oft-heard expression, "boys will be boys."

Anyways, no one GC would dispute that males have breasts. Lots of men have sizable breasts - just go visit any beach and you'll see. We just say there are functional differences between male and female breasts. Just as there are functional differences between the breasts of a woman who has never had a baby and a woman who has, and there are especially marked differences between the breasts of a woman who has recently given birth and one who has not.

In fact, there are marked differences in women's breasts over the course of our lives, and depending on our childbearing status. My own breasts are very different now than they were at 18 and 35. When I was pregnant and breastfeeding, my breasts were different to how they were before then and the way they've been since I weaned. Now that I'm past menopause age, my breasts aren't what they once were looks-wise, either. I have a hunch that when it comes to meeting male standards of what breasts should look like to be considered sexually attractive and "hot and sexy" by men and boys, your breasts probably fit the bill far, far better than mine.

GC women also say that when male human beings take hormone formulations that result in them developing visible breasts that the whole world can see with the naked eye, and which might look similar or identical to the breast tissue of some women when viewed in medical imaging, it still doesn't make them women.