Not all, but some exceptionally talented people might be hard to work with as well, so that anecdote doesn't give much information---you may well have claimed such observation as a generality and argued in the other way.
You're right, generalizations are difficult, and I can't give a second hand summary of how the younger me perceived Tim's posts. One thing I remember is that he didn't give off the dogmatic stubbornness or indifference to the reasoning of others that seems to be correlated with the difficulty in working with smart people.
