At the risk of misinterpreting edw myself, I think what he is getting at is not at all that he finds people who use (or as the case may be) Provigil or caffeine or what have you offensive.
Rather, it is that he finds it offensive that posts that seem to glorify or encourage such behavior (the OP certainly hints at that with the closing bit) end up so high on the main page and, in his mind, take away from more valuable discourse.
Personally I agree that this particular post is more news than not, though the recent post about the Liberal Arts PhD who was advocating marijuana use was borderline at best.