I have sometimes wondered if Worf isn't the best representative of the Klingons, so much as he is representative of what they should
be. As a Klingon who grew up "off world" he holds himself to a much higher ideal than those back on Qu'onos. Worf pretty much grew up reading all the scriptures and holds himself to them as if they're a sacred text on how a Klingon 'should' behave, whereas the high council likes to talk up honor and ritual but seldom truly practice what they preach.
As a quick n' dirty retcon we might say that they like to put on pretenses of that ritualistic old Klingon vibe for the benefit of outworlders, a kind of Disneyland Klingon Empire. But in reality the Klingons of the 24th century are a fractured lot who aren't as into all that blood oath stuff as they like to pretend. They cling on to the old traditions as a way of keeping something of themselves as a culture in the post-Praxis Disaster era, but none of them truly believe
any of it anymore. Except for Worf.