I think you are misattributing to stubborness that which is better explained by miscommunication. For instance, I have been around LW long enough to realise that the local definition of (super) intelligence is something like "(high0 efficienty in realising ones values, however narrow or bizarre they are". DP seems to be running on a definition where idiot-savant style narrow focus would not count as intelligence. That is not unreasonable in itself.