I suspect you may be reading too much into it: I thought the "negative consequences of rationality" were more for the sake of pure comedy than for making any kind of a point.
Of course, you may also be right and I might be the one who's reading too little into it.
Poignant short story about truth-seeking that I just found. Quote:
The full thing reads like a flash tour of OB/LW, except it was written in 2001.