How isn't this classify as a fetish? Or even borderline pedophilia. I mean, a biological male wanting to have his nipples suck by a baby so he could feel as the baby's mother.

And there is also the whole chemical soup in "male milk" that might have some unforeseen effects on the baby's health. Lactating mothers are advised not to drink or smoke because any chemical unbalance withing her body affects the milk somehow. So, there's this whole artificial hormone soup being inserted in the lactating male's body to produce a substance akin to breast milk and no one question if this is healthy for the baby?