I can't believe you took the exact cop-out I warned you against.

Not surprisingly, as I was arguing with that warning, and cited it in the comment.

restrict your attention to consequentialists whose terminal values have to be observable.

What does this mean? Consequentialist values are about the world, not about observations (but your words don't seem to fit to disagreement with this position, thus the 'what does this mean?'). Consequentialist notion of values allows a third party to act for your benefit, in which case you don't need to know what the third party needs to know in order to implement those values. The third party knows you could be lied to or not, and tries to make it so that you are not lied to, but you don't need to know about these options in order to benefit.