If you think about it, Alexander was setting himself up to fail in Klingon culture.
As a child he repeatedly rejected warrior training and Klingon rituals. Later he joins the Klingon corps, expecting to become a great warrior.
Alexander tended to be all over the place with his character-- sometimes he appeared really interested in Klingon stuff like fighting, Kahlest etc, but then later he seems to reject it all.
Maybe Alexander shares some of the blame--
Or maybe Worf was a bit too extreme with the 'a Klingon's life is his job', 'I lead a warrior's life', thing.