Some CO would always proclaim at assemblies, "Jehovah's people are the most highly educated people on earth!" Then would come the thunderous applause. It would be pointed out that reading the Awake every other week for years on end was the equivalent of a liberal arts degree. We were often told that seminary teachers often don't believe in the Bible themselves, so our education is better.
We couldn't help but start to feel a little (a lot) arrogant about our "education" and "scholarship". And as pointed out by others, we had the truth, and that put upon us the weighty burden of sharing it with others, 'like warning of an impending hurricane'.
The attitude is part of the JW package. The "stronger" a dub you are, the more of the attitude you'll express.
And yeah, I was one of the ones in need of an 'attitude adjustment'.
Some would argue I still do, but screw 'em.... ;-)