The curse, specifically, is that the smart people make their mistaken theories sound good, build them up to the point that it's hard to break them without being equally smart AND also primed to look for subtle glitches in reasoning or technique.
To me, intelligence is like a fast truck with a lot of cargo space: you can use it to help other people move into a nicer home, you can use it to make great trips, you can run it into a wall and kill yourself much better than you could with a slower truck, and you can load it up with children and drive off a bridge. Intelligence is to stupidity what a power tool is to a screwdriver, you can do more powerful good and bad things with it, but the fact that it's more powerful says nothing about how it will be used. Sadly.
As someone who secretly fears they suffer from exactly what the blog author stated, I can tell you unequivocally that your interpretation is not what I fear.
