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Trolling 2.0 is an attempt to herd a segment of the readership of the materials to be caught in an uncomfortable zone of cognitive dissonance. In this case, it is between their confirmation bias ( the bias is towards low level technologies) and their desire to not be associated with stupidity. This was poorly executed, but in an ideal case, a significant segment of the target would, for a brief moment, be highly inclined to accept and internalize the stupidity, then a painful moment of doubt is to occur, etc, etc, etc
The real question is, "Is there any good reason this was never changed?".
However, as the number of programmer hours on other systems continues to increase relative to OpenBSD, it is unlikely that OpenBSD is significantly more secure than some other modern operating systems (even in this biased criteria).