My example demonstrated the orthogonal nature of your argument and that it doesn't hold true in all circumstances, and according to your criteria of only needing one example to disprove an assertion, then yours has been dispelled as well.
I'll add that I also dislike the adage 'only boring people get bored'. However I think there is some truth to it, perhaps a more accurate phrasing would be 'people who are always bored are boring people '