People are willing and able to ignore the sufficiently-abstracted moral hit for deliciousness. Upthread, I commented on someone else with an effortpost, about how they knew about the immorality, and that choosing to turn a blind eye to it and instead be outwardly nasty is bad for the soul.

A lot of people would be willing to take that cookie if you tell them that, in the process of making it and as a requirement, they kicked a dog. That already happened, after all. What would not eating the cookie mean now?

Time really fucks with people on a minute to minute basis. Doing moral calculus while removing the time element is wholly outside of their experiences, mostly.