As I replied to Tarelton, the not for sake of happiness alone post does not address how he came to the conclusions based on specific decision theoretic optimization. He gives very loose subjective terms for his conclusions:

The best way I can put it, is that my moral intuition appears to require both the objective and subjective component to grant full value.

which is why I worded my question as I did the first time. I don't think he has done the same amount of thinking on his epistemology as he has on his TDT.