As I learned in the breast-feeding part of the baby classes my wife and I had to take through our midwives, it IS technically possible for men to lactate and nurse a baby.
But really, “can” doesn’t always mean “ought.”
Bingo. Short of your infant child starving to death due to no money/access to formula, no availability of a wet nurse, and a dead or otherwise unavailable mom. Perhaps that is why they are “able” but, the likelihood of ever needing to, well, are probably so miniscule as to border on my chances of winning the powerball.....