It's true that people often conflate utilitarianism with consequentialism, but I don't think that's what's going on here. I think it is quite reasonable to include under utilitarianism moral theories that are pretty close, like weighting people when aggregating. If people think that raw utilitarianism doesn't describe human morality, isn't it more useful for the term to describe people departing from the outpost, rather than the single theory? Abstract values that are not per-person are more problematic to include in the umbrella, but searching for "free" in that post doesn't turn up an example. If your definition is so narrow that you reject Nozick's utility monster as having to do with utilitarianism, then your definition is too narrow. Also, the lack of a normalization means that giving everyone "the same weight" does not clearly pin it down.