So you see his recent scintillating PUGS coding frenzy is nothing compared to what he is truly capable of.
*smacks forehead* Of course! Why didn't I see it before?!? Implementing a completely new language that is a superset of all other languages (other than LISP, of course) is obviously easier than golfing! *wanders off to implement ... something!*
Being right, does not endow the right to be rude; politeness costs nothing.
Being unknowing, is not the same as being stupid.
Expressing a contrary opinion, whether to the individual or the group, is more often a sign of deeper thought than of cantankerous belligerence.
Do not mistake your goals as the only goals; your opinion as the only opinion; your confidence as correctness. Saying you know better is not the same as explaining you know better.