Metaethically, I don't see a disagreement between you and Eliezer. Ethically, I do.
Eliezer says he values babies not being eaten more than he values letting a sentient being eat babies just because it wants to.
You say you don't, that's all. Different values.
Are you serious, though? What if you had enough power to stop them from eating babies without having to kill them? Can we just give them fake babies?
I do not support "letting a sentient being eat babies just because it wants to" in general. So for example if there is a human who wants to eat babies, I would prevent that. But that is because it is bad for humans to eat babies. In the case of the babyeaters, it is by stipulation good for them.
That stipulation itself, by the way, is not really a reasonable one. Some species do sometimes eat babies, and it is possible that such a species could develop reason. But it is likely that the very process of developing reason would impede the eating of b...