This is a lie.
Mothers nipples absorb the babies saliva, analyse it, and then change the next breast milk for that babies needs - this could be more water, could be less, could be more iron, magnesium, calcium, various vitamins, antibodies to fight viruses etc. This is why a mother craves weird food, her body is trying to constantly create the perfect milk for her child, 24/7.
This can NOT be achieved by a fake, simulated man taking drugs and forcing children to suck his nipples.
This information is readily available from tens of thousands of studies, if
@BBC ever wanted to do any actual journalism.
The BBC
“a transgender woman’s milk is just as good for babies as breast milk.”