This is a linkpost for http://putanumonit.com/2016/10/06/theory-of-an-immoral-sentiment/
You are essentially saying that once you've decided on a course of action, you should turn yourself into a sociopath.
Sounds terrible! But, wait, once you've decided on a course of action. The main problem with sociopaths is that they do horrible things and do them very effectively, right? Someone who chooses what to do like a non-sociopath and then executes those plans like a sociopath may sound scary and creepy and all, but it's not at all clear that it's actually a bad idea.
(I am not convinced that Jacobian is actually arguing that you decide on a course of action and then turn yourself into a sociopath. But even that strawman version of what he's saying is, I think, much less terrible than you obviously want readers to think it is.)
But, wait, once you've decided on a course of action.
You are misreading Jacobian. Let me quote (emphasis mine):
whenever you have finally decided that you should make the world a better place, at that point emotional empathy is a bias that you should discard when choosing a course of action.
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but it's not at all clear that it's actually a bad idea.
Such people are commonly called "fanatics".