"So there is not the least bit of concern for what goes into the baby's body when being nursed by a man who has been pumped full of hormones?"

"It's now just another frontier of 'equality' to ensure that men can breast feed? I am appalled at the narcissism at the heart of this experiment, as well as the contortions that trans people put everyone else through in order to accommodate their feelings (non-gendered bathrooms, reinventing pronouns, etc.)."

A top-rated comment at "Are We Ready for the Breastfeeding Father?/He has intrigued and disgusted for millenniums. He has also remained largely hypothetical, until now" (NYT). The article features an illustration of hairy chested man breastfeeding a baby. Hair in the baby's food!

The article reports on...

... a peer-reviewed case report confirmed that a transgender woman, assigned male at birth, [who] was able to breastfeed her child after she was put on a regimen of hormonal drugs..... Before the treatment, the patient had been receiving feminizing hormones for six years. We don’t know how long it would take for a cis man to induce functional lactation. But “we have a pretty good idea of the types of hormone cocktails that would be needed,” said Tamar Reisman, an endocrinologist with the Mount Sinai Center for Transgender Medicine and Surgery and one of the two authors of the case report....

“I just thought, ‘How cool if it would work!’” Mr. Bengtsson said. “Just imagine the extraordinary consequences it could have for our society.”

The article collects some interesting material on the subject of tales of men who were able to breastfeed (without any servings of "hormone cocktails"), not that you'll believe they were true:

In the fourth century B.C., the philosopher Aristotle noted that some men were able to produce milk by squeezing their breasts. In the King James translation of the Bible, the breasts of the malnourished Job are described as full of milk. Later, in the Babylonian Talmud, we find a story of a widowed man whose “breasts opened and he nursed his child.”...

By the end of the 19th century, the American physician George M. Gould and his colleague Walter L. Pyle listed, in their book “Anomalies and Curiosities of Medicine,” a number of instances of men suckling infants, including an unverifiable report, relayed by 16th-century missionaries in Brazil, claiming “there was a whole Indian nation whose women had small and withered breasts, and whose children owed their nourishment entirely from the males.”...

The author continues:

What is startling, when we dig into the history, is just how many great minds, from Aristotle to Darwin, have earnestly, and without judgment, pondered the question of men’s breast milk...  [I]n Marge Piercy’s 1976 sci-fi novel, “Woman on the Edge of Time,” in which a woman named Connie is transported into the future — the year 2137 — where she sees a bearded man breastfeeding a child. She notes that he has breasts, “like a flat-chested woman temporarily swollen with milk.” Connie is angry at first: “How dare any man share that pleasure?” she thinks. But in the end, the world depicted in the book is ultimately intended as a gender-free utopia....

If you want a gender-free utopia and you're willing to do artificial things to get there, why not just do what was already happening in America in the 1950s, switch to bottle-feeding formula. Both parents can do that. But the transgender movement isn't about making gender less important!