Even after everyone's professed values get destroyed by the truth, it's not at all clear to me that we end up in roughly the same place. Intellectuals like you or I might aspire to growing up to be a superintelligence, while others seem to care more about pleasure.

Your conclusion may be right, but the HedWeb isn't strong evidence -- as far as I recall David Pearce holds a philosophically flawed belief called "psychological hedonism" that says all humans are motivated by is pleasure and pain and therefore nothing else matters, or some such. So I would say that his moral system has not yet had to withstand a razing attempt from all the truth hordes that are out there roaming the Steppes of Fact.